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Finding the Fourth Proportional to 27,807.63, 38,375.15 and 15,870.73

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Solution

The fourth proportional to 27,807.63, 38,375.15 and 15,870.73 is: 21,901.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,807.63 : 38,375.15 = 15,870.73 : x
  2. Step 2: Convert to fraction form
    27,807.63/38,375.15 = 15,870.73/x
  3. Step 3: Cross multiply
    27,807.63x = 38,375.15 × 15,870.73
  4. Step 4: Simplify right side
    27,807.63x = 609,041,644.36
  5. Step 5: Solve for x
    x = 609,041,644.36/27,807.63
  6. Step 6: Final answer
    x = 21,901.96

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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.