Home / 21,963.08-30,278.92-13,892.72

Finding the Fourth Proportional to 21,963.08, 30,278.92 and 13,892.72

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Solution

The fourth proportional to 21,963.08, 30,278.92 and 13,892.72 is: 19,152.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,963.08 : 30,278.92 = 13,892.72 : x
  2. Step 2: Convert to fraction form
    21,963.08/30,278.92 = 13,892.72/x
  3. Step 3: Cross multiply
    21,963.08x = 30,278.92 × 13,892.72
  4. Step 4: Simplify right side
    21,963.08x = 420,656,371.34
  5. Step 5: Solve for x
    x = 420,656,371.34/21,963.08
  6. Step 6: Final answer
    x = 19,152.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.