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Finding the Fourth Proportional to 22,750.31, 31,397.97 and 12,679.67

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Solution

The fourth proportional to 22,750.31, 31,397.97 and 12,679.67 is: 17,499.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,750.31 : 31,397.97 = 12,679.67 : x
  2. Step 2: Convert to fraction form
    22,750.31/31,397.97 = 12,679.67/x
  3. Step 3: Cross multiply
    22,750.31x = 31,397.97 × 12,679.67
  4. Step 4: Simplify right side
    22,750.31x = 398,115,741.28
  5. Step 5: Solve for x
    x = 398,115,741.28/22,750.31
  6. Step 6: Final answer
    x = 17,499.36

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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.