Home / 14,487.30-21,731.57-5,127.40

Finding the Fourth Proportional to 14,487.30, 21,731.57 and 5,127.40

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Solution

The fourth proportional to 14,487.30, 21,731.57 and 5,127.40 is: 7,691.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,487.30 : 21,731.57 = 5,127.40 : x
  2. Step 2: Convert to fraction form
    14,487.30/21,731.57 = 5,127.40/x
  3. Step 3: Cross multiply
    14,487.30x = 21,731.57 × 5,127.40
  4. Step 4: Simplify right side
    14,487.30x = 111,426,452.02
  5. Step 5: Solve for x
    x = 111,426,452.02/14,487.30
  6. Step 6: Final answer
    x = 7,691.32

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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.