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Finding the Fourth Proportional to 21,702.65, 32,555.24 and 8,375.72

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Solution

The fourth proportional to 21,702.65, 32,555.24 and 8,375.72 is: 12,564.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,702.65 : 32,555.24 = 8,375.72 : x
  2. Step 2: Convert to fraction form
    21,702.65/32,555.24 = 8,375.72/x
  3. Step 3: Cross multiply
    21,702.65x = 32,555.24 × 8,375.72
  4. Step 4: Simplify right side
    21,702.65x = 272,673,370.12
  5. Step 5: Solve for x
    x = 272,673,370.12/21,702.65
  6. Step 6: Final answer
    x = 12,564.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.