Home / 12,474,259.20-18,711,388.80-7,666,358.40

Finding the Fourth Proportional to 12,474,259.20, 18,711,388.80 and 7,666,358.40

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Solution

The fourth proportional to 12,474,259.20, 18,711,388.80 and 7,666,358.40 is: 11,499,537.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474,259.20 : 18,711,388.80 = 7,666,358.40 : x
  2. Step 2: Convert to fraction form
    12,474,259.20/18,711,388.80 = 7,666,358.40/x
  3. Step 3: Cross multiply
    12,474,259.20x = 18,711,388.80 × 7,666,358.40
  4. Step 4: Simplify right side
    12,474,259.20x = 143,448,212,702,545.94
  5. Step 5: Solve for x
    x = 143,448,212,702,545.94/12,474,259.20
  6. Step 6: Final answer
    x = 11,499,537.60

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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.