Home / 21,246.60-31,825.28-10,142.12

Finding the Fourth Proportional to 21,246.60, 31,825.28 and 10,142.12

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Solution

The fourth proportional to 21,246.60, 31,825.28 and 10,142.12 is: 15,191.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,246.60 : 31,825.28 = 10,142.12 : x
  2. Step 2: Convert to fraction form
    21,246.60/31,825.28 = 10,142.12/x
  3. Step 3: Cross multiply
    21,246.60x = 31,825.28 × 10,142.12
  4. Step 4: Simplify right side
    21,246.60x = 322,775,808.79
  5. Step 5: Solve for x
    x = 322,775,808.79/21,246.60
  6. Step 6: Final answer
    x = 15,191.88

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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.