Home / 21,702.36-29,932.83-15,753.72

Finding the Fourth Proportional to 21,702.36, 29,932.83 and 15,753.72

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Solution

The fourth proportional to 21,702.36, 29,932.83 and 15,753.72 is: 21,728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,702.36 : 29,932.83 = 15,753.72 : x
  2. Step 2: Convert to fraction form
    21,702.36/29,932.83 = 15,753.72/x
  3. Step 3: Cross multiply
    21,702.36x = 29,932.83 × 15,753.72
  4. Step 4: Simplify right side
    21,702.36x = 471,553,422.63
  5. Step 5: Solve for x
    x = 471,553,422.63/21,702.36
  6. Step 6: Final answer
    x = 21,728.21

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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.