Home / 10,487.40-15,731.02-4,937.72

Finding the Fourth Proportional to 10,487.40, 15,731.02 and 4,937.72

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Solution

The fourth proportional to 10,487.40, 15,731.02 and 4,937.72 is: 7,406.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,487.40 : 15,731.02 = 4,937.72 : x
  2. Step 2: Convert to fraction form
    10,487.40/15,731.02 = 4,937.72/x
  3. Step 3: Cross multiply
    10,487.40x = 15,731.02 × 4,937.72
  4. Step 4: Simplify right side
    10,487.40x = 77,675,372.07
  5. Step 5: Solve for x
    x = 77,675,372.07/10,487.40
  6. Step 6: Final answer
    x = 7,406.54

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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.