Home / 21,437.75-29,584.05-11,878.13

Finding the Fourth Proportional to 21,437.75, 29,584.05 and 11,878.13

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Solution

The fourth proportional to 21,437.75, 29,584.05 and 11,878.13 is: 16,391.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,437.75 : 29,584.05 = 11,878.13 : x
  2. Step 2: Convert to fraction form
    21,437.75/29,584.05 = 11,878.13/x
  3. Step 3: Cross multiply
    21,437.75x = 29,584.05 × 11,878.13
  4. Step 4: Simplify right side
    21,437.75x = 351,403,191.83
  5. Step 5: Solve for x
    x = 351,403,191.83/21,437.75
  6. Step 6: Final answer
    x = 16,391.79

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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.