Home / 22,615.12-31,206.45-12,540.88

Finding the Fourth Proportional to 22,615.12, 31,206.45 and 12,540.88

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Solution

The fourth proportional to 22,615.12, 31,206.45 and 12,540.88 is: 17,305.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,615.12 : 31,206.45 = 12,540.88 : x
  2. Step 2: Convert to fraction form
    22,615.12/31,206.45 = 12,540.88/x
  3. Step 3: Cross multiply
    22,615.12x = 31,206.45 × 12,540.88
  4. Step 4: Simplify right side
    22,615.12x = 391,356,344.68
  5. Step 5: Solve for x
    x = 391,356,344.68/22,615.12
  6. Step 6: Final answer
    x = 17,305.07

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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.