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Finding the Fourth Proportional to 11,278.88, 15,549.94 and 9,254.88

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Solution

The fourth proportional to 11,278.88, 15,549.94 and 9,254.88 is: 12,759.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.88 : 15,549.94 = 9,254.88 : x
  2. Step 2: Convert to fraction form
    11,278.88/15,549.94 = 9,254.88/x
  3. Step 3: Cross multiply
    11,278.88x = 15,549.94 × 9,254.88
  4. Step 4: Simplify right side
    11,278.88x = 143,912,828.71
  5. Step 5: Solve for x
    x = 143,912,828.71/11,278.88
  6. Step 6: Final answer
    x = 12,759.50

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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.