Home / 15,725.88-21,702.05-8,652.32

Finding the Fourth Proportional to 15,725.88, 21,702.05 and 8,652.32

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Solution

The fourth proportional to 15,725.88, 21,702.05 and 8,652.32 is: 11,940.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,725.88 : 21,702.05 = 8,652.32 : x
  2. Step 2: Convert to fraction form
    15,725.88/21,702.05 = 8,652.32/x
  3. Step 3: Cross multiply
    15,725.88x = 21,702.05 × 8,652.32
  4. Step 4: Simplify right side
    15,725.88x = 187,773,081.26
  5. Step 5: Solve for x
    x = 187,773,081.26/15,725.88
  6. Step 6: Final answer
    x = 11,940.39

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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.