Home / 14,385.47-21,549.49-11,428.91

Finding the Fourth Proportional to 14,385.47, 21,549.49 and 11,428.91

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Solution

The fourth proportional to 14,385.47, 21,549.49 and 11,428.91 is: 17,120.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,385.47 : 21,549.49 = 11,428.91 : x
  2. Step 2: Convert to fraction form
    14,385.47/21,549.49 = 11,428.91/x
  3. Step 3: Cross multiply
    14,385.47x = 21,549.49 × 11,428.91
  4. Step 4: Simplify right side
    14,385.47x = 246,287,311.75
  5. Step 5: Solve for x
    x = 246,287,311.75/14,385.47
  6. Step 6: Final answer
    x = 17,120.57

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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.