Home / 34,139.71-47,098.92-20,687.64

Finding the Fourth Proportional to 34,139.71, 47,098.92 and 20,687.64

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Solution

The fourth proportional to 34,139.71, 47,098.92 and 20,687.64 is: 28,540.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,139.71 : 47,098.92 = 20,687.64 : x
  2. Step 2: Convert to fraction form
    34,139.71/47,098.92 = 20,687.64/x
  3. Step 3: Cross multiply
    34,139.71x = 47,098.92 × 20,687.64
  4. Step 4: Simplify right side
    34,139.71x = 974,365,501.35
  5. Step 5: Solve for x
    x = 974,365,501.35/34,139.71
  6. Step 6: Final answer
    x = 28,540.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.