Home / 15,179.30-20,943.87-9,210.83

Finding the Fourth Proportional to 15,179.30, 20,943.87 and 9,210.83

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Solution

The fourth proportional to 15,179.30, 20,943.87 and 9,210.83 is: 12,708.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,179.30 : 20,943.87 = 9,210.83 : x
  2. Step 2: Convert to fraction form
    15,179.30/20,943.87 = 9,210.83/x
  3. Step 3: Cross multiply
    15,179.30x = 20,943.87 × 9,210.83
  4. Step 4: Simplify right side
    15,179.30x = 192,910,426.11
  5. Step 5: Solve for x
    x = 192,910,426.11/15,179.30
  6. Step 6: Final answer
    x = 12,708.78

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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.