Home / 28,091.52-38,766.06-15,516

Finding the Fourth Proportional to 28,091.52, 38,766.06 and 15,516

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Solution

The fourth proportional to 28,091.52, 38,766.06 and 15,516 is: 21,411.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.52 : 38,766.06 = 15,516 : x
  2. Step 2: Convert to fraction form
    28,091.52/38,766.06 = 15,516/x
  3. Step 3: Cross multiply
    28,091.52x = 38,766.06 × 15,516
  4. Step 4: Simplify right side
    28,091.52x = 601,494,186.96
  5. Step 5: Solve for x
    x = 601,494,186.96/28,091.52
  6. Step 6: Final answer
    x = 21,411.95

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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.