Home / 21,328.30-31,946.28-15,472

Finding the Fourth Proportional to 21,328.30, 31,946.28 and 15,472

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Solution

The fourth proportional to 21,328.30, 31,946.28 and 15,472 is: 23,174.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.30 : 31,946.28 = 15,472 : x
  2. Step 2: Convert to fraction form
    21,328.30/31,946.28 = 15,472/x
  3. Step 3: Cross multiply
    21,328.30x = 31,946.28 × 15,472
  4. Step 4: Simplify right side
    21,328.30x = 494,272,844.16
  5. Step 5: Solve for x
    x = 494,272,844.16/21,328.30
  6. Step 6: Final answer
    x = 23,174.51

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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.