Home / 19,861.47-29,791.87-10,499.49

Finding the Fourth Proportional to 19,861.47, 29,791.87 and 10,499.49

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Solution

The fourth proportional to 19,861.47, 29,791.87 and 10,499.49 is: 15,749.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,861.47 : 29,791.87 = 10,499.49 : x
  2. Step 2: Convert to fraction form
    19,861.47/29,791.87 = 10,499.49/x
  3. Step 3: Cross multiply
    19,861.47x = 29,791.87 × 10,499.49
  4. Step 4: Simplify right side
    19,861.47x = 312,799,414.90
  5. Step 5: Solve for x
    x = 312,799,414.90/19,861.47
  6. Step 6: Final answer
    x = 15,749.06

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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.