Home / 10,486.20-15,729.30-4,937.70

Finding the Fourth Proportional to 10,486.20, 15,729.30 and 4,937.70

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Solution

The fourth proportional to 10,486.20, 15,729.30 and 4,937.70 is: 7,406.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,486.20 : 15,729.30 = 4,937.70 : x
  2. Step 2: Convert to fraction form
    10,486.20/15,729.30 = 4,937.70/x
  3. Step 3: Cross multiply
    10,486.20x = 15,729.30 × 4,937.70
  4. Step 4: Simplify right side
    10,486.20x = 77,666,564.61
  5. Step 5: Solve for x
    x = 77,666,564.61/10,486.20
  6. Step 6: Final answer
    x = 7,406.55

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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.