Home / 28,331.52-39,098.88-15,756

Finding the Fourth Proportional to 28,331.52, 39,098.88 and 15,756

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Solution

The fourth proportional to 28,331.52, 39,098.88 and 15,756 is: 21,744.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,331.52 : 39,098.88 = 15,756 : x
  2. Step 2: Convert to fraction form
    28,331.52/39,098.88 = 15,756/x
  3. Step 3: Cross multiply
    28,331.52x = 39,098.88 × 15,756
  4. Step 4: Simplify right side
    28,331.52x = 616,041,953.28
  5. Step 5: Solve for x
    x = 616,041,953.28/28,331.52
  6. Step 6: Final answer
    x = 21,744.05

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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.