Home / 21,240.97-29,310.80-12,508.25

Finding the Fourth Proportional to 21,240.97, 29,310.80 and 12,508.25

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Solution

The fourth proportional to 21,240.97, 29,310.80 and 12,508.25 is: 17,260.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.97 : 29,310.80 = 12,508.25 : x
  2. Step 2: Convert to fraction form
    21,240.97/29,310.80 = 12,508.25/x
  3. Step 3: Cross multiply
    21,240.97x = 29,310.80 × 12,508.25
  4. Step 4: Simplify right side
    21,240.97x = 366,626,605.00
  5. Step 5: Solve for x
    x = 366,626,605.00/21,240.97
  6. Step 6: Final answer
    x = 17,260.35

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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.