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Finding the Fourth Proportional to 27,859.98, 38,437.44 and 15,914.87

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Solution

The fourth proportional to 27,859.98, 38,437.44 and 15,914.87 is: 21,957.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,859.98 : 38,437.44 = 15,914.87 : x
  2. Step 2: Convert to fraction form
    27,859.98/38,437.44 = 15,914.87/x
  3. Step 3: Cross multiply
    27,859.98x = 38,437.44 × 15,914.87
  4. Step 4: Simplify right side
    27,859.98x = 611,726,753.01
  5. Step 5: Solve for x
    x = 611,726,753.01/27,859.98
  6. Step 6: Final answer
    x = 21,957.18

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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.