Home / 15,725.72-21,702.56-8,652.15

Finding the Fourth Proportional to 15,725.72, 21,702.56 and 8,652.15

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Solution

The fourth proportional to 15,725.72, 21,702.56 and 8,652.15 is: 11,940.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,725.72 : 21,702.56 = 8,652.15 : x
  2. Step 2: Convert to fraction form
    15,725.72/21,702.56 = 8,652.15/x
  3. Step 3: Cross multiply
    15,725.72x = 21,702.56 × 8,652.15
  4. Step 4: Simplify right side
    15,725.72x = 187,773,761.24
  5. Step 5: Solve for x
    x = 187,773,761.24/15,725.72
  6. Step 6: Final answer
    x = 11,940.55

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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.