Home / 40,815.60-61,223.40-14,521.20

Finding the Fourth Proportional to 40,815.60, 61,223.40 and 14,521.20

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Solution

The fourth proportional to 40,815.60, 61,223.40 and 14,521.20 is: 21,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,815.60 : 61,223.40 = 14,521.20 : x
  2. Step 2: Convert to fraction form
    40,815.60/61,223.40 = 14,521.20/x
  3. Step 3: Cross multiply
    40,815.60x = 61,223.40 × 14,521.20
  4. Step 4: Simplify right side
    40,815.60x = 889,037,236.08
  5. Step 5: Solve for x
    x = 889,037,236.08/40,815.60
  6. Step 6: Final answer
    x = 21,781.80

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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.