Home / 22,659.80-31,270.05-12,587.76

Finding the Fourth Proportional to 22,659.80, 31,270.05 and 12,587.76

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Solution

The fourth proportional to 22,659.80, 31,270.05 and 12,587.76 is: 17,370.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,659.80 : 31,270.05 = 12,587.76 : x
  2. Step 2: Convert to fraction form
    22,659.80/31,270.05 = 12,587.76/x
  3. Step 3: Cross multiply
    22,659.80x = 31,270.05 × 12,587.76
  4. Step 4: Simplify right side
    22,659.80x = 393,619,884.59
  5. Step 5: Solve for x
    x = 393,619,884.59/22,659.80
  6. Step 6: Final answer
    x = 17,370.85

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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.