Home / 21,156.24-31,711.68-10,056

Finding the Fourth Proportional to 21,156.24, 31,711.68 and 10,056

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Solution

The fourth proportional to 21,156.24, 31,711.68 and 10,056 is: 15,073.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.24 : 31,711.68 = 10,056 : x
  2. Step 2: Convert to fraction form
    21,156.24/31,711.68 = 10,056/x
  3. Step 3: Cross multiply
    21,156.24x = 31,711.68 × 10,056
  4. Step 4: Simplify right side
    21,156.24x = 318,892,654.08
  5. Step 5: Solve for x
    x = 318,892,654.08/21,156.24
  6. Step 6: Final answer
    x = 15,073.22

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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.