Home / 10,109.28-13,929.84-9,446.88

Finding the Fourth Proportional to 10,109.28, 13,929.84 and 9,446.88

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Solution

The fourth proportional to 10,109.28, 13,929.84 and 9,446.88 is: 13,017.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,109.28 : 13,929.84 = 9,446.88 : x
  2. Step 2: Convert to fraction form
    10,109.28/13,929.84 = 9,446.88/x
  3. Step 3: Cross multiply
    10,109.28x = 13,929.84 × 9,446.88
  4. Step 4: Simplify right side
    10,109.28x = 131,593,526.90
  5. Step 5: Solve for x
    x = 131,593,526.90/10,109.28
  6. Step 6: Final answer
    x = 13,017.10

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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.