Home / 15,089.13-20,817.28-11,119.71

Finding the Fourth Proportional to 15,089.13, 20,817.28 and 11,119.71

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Solution

The fourth proportional to 15,089.13, 20,817.28 and 11,119.71 is: 15,340.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,089.13 : 20,817.28 = 11,119.71 : x
  2. Step 2: Convert to fraction form
    15,089.13/20,817.28 = 11,119.71/x
  3. Step 3: Cross multiply
    15,089.13x = 20,817.28 × 11,119.71
  4. Step 4: Simplify right side
    15,089.13x = 231,482,116.59
  5. Step 5: Solve for x
    x = 231,482,116.59/15,089.13
  6. Step 6: Final answer
    x = 15,340.98

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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.