Home / 15,139.20-20,892.69-9,167.49

Finding the Fourth Proportional to 15,139.20, 20,892.69 and 9,167.49

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Solution

The fourth proportional to 15,139.20, 20,892.69 and 9,167.49 is: 12,651.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.20 : 20,892.69 = 9,167.49 : x
  2. Step 2: Convert to fraction form
    15,139.20/20,892.69 = 9,167.49/x
  3. Step 3: Cross multiply
    15,139.20x = 20,892.69 × 9,167.49
  4. Step 4: Simplify right side
    15,139.20x = 191,533,526.65
  5. Step 5: Solve for x
    x = 191,533,526.65/15,139.20
  6. Step 6: Final answer
    x = 12,651.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.