Home / 21,425.13-29,559.85-13,877.25

Finding the Fourth Proportional to 21,425.13, 29,559.85 and 13,877.25

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Solution

The fourth proportional to 21,425.13, 29,559.85 and 13,877.25 is: 19,146.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,425.13 : 29,559.85 = 13,877.25 : x
  2. Step 2: Convert to fraction form
    21,425.13/29,559.85 = 13,877.25/x
  3. Step 3: Cross multiply
    21,425.13x = 29,559.85 × 13,877.25
  4. Step 4: Simplify right side
    21,425.13x = 410,209,385.52
  5. Step 5: Solve for x
    x = 410,209,385.52/21,425.13
  6. Step 6: Final answer
    x = 19,146.18

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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.