Home / 21,248.46-31,872.96-11,887.02

Finding the Fourth Proportional to 21,248.46, 31,872.96 and 11,887.02

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Solution

The fourth proportional to 21,248.46, 31,872.96 and 11,887.02 is: 17,830.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.46 : 31,872.96 = 11,887.02 : x
  2. Step 2: Convert to fraction form
    21,248.46/31,872.96 = 11,887.02/x
  3. Step 3: Cross multiply
    21,248.46x = 31,872.96 × 11,887.02
  4. Step 4: Simplify right side
    21,248.46x = 378,874,512.98
  5. Step 5: Solve for x
    x = 378,874,512.98/21,248.46
  6. Step 6: Final answer
    x = 17,830.68

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1.5x scale

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.