Home / 21,702.20-32,715.96-20,255.53

Finding the Fourth Proportional to 21,702.20, 32,715.96 and 20,255.53

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Solution

The fourth proportional to 21,702.20, 32,715.96 and 20,255.53 is: 30,535.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,702.20 : 32,715.96 = 20,255.53 : x
  2. Step 2: Convert to fraction form
    21,702.20/32,715.96 = 20,255.53/x
  3. Step 3: Cross multiply
    21,702.20x = 32,715.96 × 20,255.53
  4. Step 4: Simplify right side
    21,702.20x = 662,678,992.05
  5. Step 5: Solve for x
    x = 662,678,992.05/21,702.20
  6. Step 6: Final answer
    x = 30,535.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.