Home / 18,895.28-28,332.12-5,743.76

Finding the Fourth Proportional to 18,895.28, 28,332.12 and 5,743.76

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Solution

The fourth proportional to 18,895.28, 28,332.12 and 5,743.76 is: 8,612.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,895.28 : 28,332.12 = 5,743.76 : x
  2. Step 2: Convert to fraction form
    18,895.28/28,332.12 = 5,743.76/x
  3. Step 3: Cross multiply
    18,895.28x = 28,332.12 × 5,743.76
  4. Step 4: Simplify right side
    18,895.28x = 162,732,897.57
  5. Step 5: Solve for x
    x = 162,732,897.57/18,895.28
  6. Step 6: Final answer
    x = 8,612.36

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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.