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Finding the Fourth Proportional to 15,761.17, 21,750.28 and 9,047.89

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Solution

The fourth proportional to 15,761.17, 21,750.28 and 9,047.89 is: 12,486.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,761.17 : 21,750.28 = 9,047.89 : x
  2. Step 2: Convert to fraction form
    15,761.17/21,750.28 = 9,047.89/x
  3. Step 3: Cross multiply
    15,761.17x = 21,750.28 × 9,047.89
  4. Step 4: Simplify right side
    15,761.17x = 196,794,140.91
  5. Step 5: Solve for x
    x = 196,794,140.91/15,761.17
  6. Step 6: Final answer
    x = 12,486.01

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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.