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Finding the Fourth Proportional to 27,754.89, 38,302.71 and 15,816.30

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Solution

The fourth proportional to 27,754.89, 38,302.71 and 15,816.30 is: 21,827.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,754.89 : 38,302.71 = 15,816.30 : x
  2. Step 2: Convert to fraction form
    27,754.89/38,302.71 = 15,816.30/x
  3. Step 3: Cross multiply
    27,754.89x = 38,302.71 × 15,816.30
  4. Step 4: Simplify right side
    27,754.89x = 605,807,152.17
  5. Step 5: Solve for x
    x = 605,807,152.17/27,754.89
  6. Step 6: Final answer
    x = 21,827.04

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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.