Home / 12,020.30-18,030.45-5,000.18

Finding the Fourth Proportional to 12,020.30, 18,030.45 and 5,000.18

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Solution

The fourth proportional to 12,020.30, 18,030.45 and 5,000.18 is: 7,500.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020.30 : 18,030.45 = 5,000.18 : x
  2. Step 2: Convert to fraction form
    12,020.30/18,030.45 = 5,000.18/x
  3. Step 3: Cross multiply
    12,020.30x = 18,030.45 × 5,000.18
  4. Step 4: Simplify right side
    12,020.30x = 90,155,497.37
  5. Step 5: Solve for x
    x = 90,155,497.37/12,020.30
  6. Step 6: Final answer
    x = 7,500.27

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Half scale
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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.