Home / 22,755.15-31,398.30-12,681.39

Finding the Fourth Proportional to 22,755.15, 31,398.30 and 12,681.39

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Solution

The fourth proportional to 22,755.15, 31,398.30 and 12,681.39 is: 17,498.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,755.15 : 31,398.30 = 12,681.39 : x
  2. Step 2: Convert to fraction form
    22,755.15/31,398.30 = 12,681.39/x
  3. Step 3: Cross multiply
    22,755.15x = 31,398.30 × 12,681.39
  4. Step 4: Simplify right side
    22,755.15x = 398,174,087.64
  5. Step 5: Solve for x
    x = 398,174,087.64/22,755.15
  6. Step 6: Final answer
    x = 17,498.20

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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.