Home / 12,456,401.10-18,684,601.65-7,648,500.30

Finding the Fourth Proportional to 12,456,401.10, 18,684,601.65 and 7,648,500.30

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Solution

The fourth proportional to 12,456,401.10, 18,684,601.65 and 7,648,500.30 is: 11,472,750.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456,401.10 : 18,684,601.65 = 7,648,500.30 : x
  2. Step 2: Convert to fraction form
    12,456,401.10/18,684,601.65 = 7,648,500.30/x
  3. Step 3: Cross multiply
    12,456,401.10x = 18,684,601.65 × 7,648,500.30
  4. Step 4: Simplify right side
    12,456,401.10x = 142,909,181,325,405.47
  5. Step 5: Solve for x
    x = 142,909,181,325,405.47/12,456,401.10
  6. Step 6: Final answer
    x = 11,472,750.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.