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Finding the Fourth Proportional to 18,641.17, 27,961.76 and 15,347.34

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Solution

The fourth proportional to 18,641.17, 27,961.76 and 15,347.34 is: 23,021.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,641.17 : 27,961.76 = 15,347.34 : x
  2. Step 2: Convert to fraction form
    18,641.17/27,961.76 = 15,347.34/x
  3. Step 3: Cross multiply
    18,641.17x = 27,961.76 × 15,347.34
  4. Step 4: Simplify right side
    18,641.17x = 429,138,680.84
  5. Step 5: Solve for x
    x = 429,138,680.84/18,641.17
  6. Step 6: Final answer
    x = 23,021.02

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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.