Home / 20,009.16-29,997.48-8,331.12

Finding the Fourth Proportional to 20,009.16, 29,997.48 and 8,331.12

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Solution

The fourth proportional to 20,009.16, 29,997.48 and 8,331.12 is: 12,489.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,009.16 : 29,997.48 = 8,331.12 : x
  2. Step 2: Convert to fraction form
    20,009.16/29,997.48 = 8,331.12/x
  3. Step 3: Cross multiply
    20,009.16x = 29,997.48 × 8,331.12
  4. Step 4: Simplify right side
    20,009.16x = 249,912,605.58
  5. Step 5: Solve for x
    x = 249,912,605.58/20,009.16
  6. Step 6: Final answer
    x = 12,489.91

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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.