Home / 20,008.38-29,988.60-9,320.33

Finding the Fourth Proportional to 20,008.38, 29,988.60 and 9,320.33

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Solution

The fourth proportional to 20,008.38, 29,988.60 and 9,320.33 is: 13,969.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,008.38 : 29,988.60 = 9,320.33 : x
  2. Step 2: Convert to fraction form
    20,008.38/29,988.60 = 9,320.33/x
  3. Step 3: Cross multiply
    20,008.38x = 29,988.60 × 9,320.33
  4. Step 4: Simplify right side
    20,008.38x = 279,503,723.21
  5. Step 5: Solve for x
    x = 279,503,723.21/20,008.38
  6. Step 6: Final answer
    x = 13,969.33

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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.