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Finding the Fourth Proportional to 17,512.56, 26,278.56 and 7,123.50

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Solution

The fourth proportional to 17,512.56, 26,278.56 and 7,123.50 is: 10,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,512.56 : 26,278.56 = 7,123.50 : x
  2. Step 2: Convert to fraction form
    17,512.56/26,278.56 = 7,123.50/x
  3. Step 3: Cross multiply
    17,512.56x = 26,278.56 × 7,123.50
  4. Step 4: Simplify right side
    17,512.56x = 187,195,322.16
  5. Step 5: Solve for x
    x = 187,195,322.16/17,512.56
  6. Step 6: Final answer
    x = 10,689.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.