Home / 21,423.60-32,151.20-10,179

Finding the Fourth Proportional to 21,423.60, 32,151.20 and 10,179

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Solution

The fourth proportional to 21,423.60, 32,151.20 and 10,179 is: 15,276.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,423.60 : 32,151.20 = 10,179 : x
  2. Step 2: Convert to fraction form
    21,423.60/32,151.20 = 10,179/x
  3. Step 3: Cross multiply
    21,423.60x = 32,151.20 × 10,179
  4. Step 4: Simplify right side
    21,423.60x = 327,267,064.80
  5. Step 5: Solve for x
    x = 327,267,064.80/21,423.60
  6. Step 6: Final answer
    x = 15,276.01

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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.