Home / 21,532.52-29,706.42-15,880.83

Finding the Fourth Proportional to 21,532.52, 29,706.42 and 15,880.83

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Solution

The fourth proportional to 21,532.52, 29,706.42 and 15,880.83 is: 21,909.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,532.52 : 29,706.42 = 15,880.83 : x
  2. Step 2: Convert to fraction form
    21,532.52/29,706.42 = 15,880.83/x
  3. Step 3: Cross multiply
    21,532.52x = 29,706.42 × 15,880.83
  4. Step 4: Simplify right side
    21,532.52x = 471,762,605.93
  5. Step 5: Solve for x
    x = 471,762,605.93/21,532.52
  6. Step 6: Final answer
    x = 21,909.31

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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.