Home / 21,395.52-31,951.12-21,163.84

Finding the Fourth Proportional to 21,395.52, 31,951.12 and 21,163.84

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Solution

The fourth proportional to 21,395.52, 31,951.12 and 21,163.84 is: 31,605.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,395.52 : 31,951.12 = 21,163.84 : x
  2. Step 2: Convert to fraction form
    21,395.52/31,951.12 = 21,163.84/x
  3. Step 3: Cross multiply
    21,395.52x = 31,951.12 × 21,163.84
  4. Step 4: Simplify right side
    21,395.52x = 676,208,391.50
  5. Step 5: Solve for x
    x = 676,208,391.50/21,395.52
  6. Step 6: Final answer
    x = 31,605.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.