Home / 51,639.52-77,449.96-13,689.04

Finding the Fourth Proportional to 51,639.52, 77,449.96 and 13,689.04

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Solution

The fourth proportional to 51,639.52, 77,449.96 and 13,689.04 is: 20,531.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,639.52 : 77,449.96 = 13,689.04 : x
  2. Step 2: Convert to fraction form
    51,639.52/77,449.96 = 13,689.04/x
  3. Step 3: Cross multiply
    51,639.52x = 77,449.96 × 13,689.04
  4. Step 4: Simplify right side
    51,639.52x = 1,060,215,600.44
  5. Step 5: Solve for x
    x = 1,060,215,600.44/51,639.52
  6. Step 6: Final answer
    x = 20,531.09

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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.