Home / 19,139.91-26,418.30-12,425.18

Finding the Fourth Proportional to 19,139.91, 26,418.30 and 12,425.18

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Solution

The fourth proportional to 19,139.91, 26,418.30 and 12,425.18 is: 17,150.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.91 : 26,418.30 = 12,425.18 : x
  2. Step 2: Convert to fraction form
    19,139.91/26,418.30 = 12,425.18/x
  3. Step 3: Cross multiply
    19,139.91x = 26,418.30 × 12,425.18
  4. Step 4: Simplify right side
    19,139.91x = 328,252,000.70
  5. Step 5: Solve for x
    x = 328,252,000.70/19,139.91
  6. Step 6: Final answer
    x = 17,150.13

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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.