Home / 21,702.40-32,575.20-10,621.60

Finding the Fourth Proportional to 21,702.40, 32,575.20 and 10,621.60

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Solution

The fourth proportional to 21,702.40, 32,575.20 and 10,621.60 is: 15,942.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,702.40 : 32,575.20 = 10,621.60 : x
  2. Step 2: Convert to fraction form
    21,702.40/32,575.20 = 10,621.60/x
  3. Step 3: Cross multiply
    21,702.40x = 32,575.20 × 10,621.60
  4. Step 4: Simplify right side
    21,702.40x = 346,000,744.32
  5. Step 5: Solve for x
    x = 346,000,744.32/21,702.40
  6. Step 6: Final answer
    x = 15,942.97

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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.