Home / 27,872.01-38,463.40-15,935.60

Finding the Fourth Proportional to 27,872.01, 38,463.40 and 15,935.60

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Solution

The fourth proportional to 27,872.01, 38,463.40 and 15,935.60 is: 21,991.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,872.01 : 38,463.40 = 15,935.60 : x
  2. Step 2: Convert to fraction form
    27,872.01/38,463.40 = 15,935.60/x
  3. Step 3: Cross multiply
    27,872.01x = 38,463.40 × 15,935.60
  4. Step 4: Simplify right side
    27,872.01x = 612,937,124.88
  5. Step 5: Solve for x
    x = 612,937,124.88/27,872.01
  6. Step 6: Final answer
    x = 21,991.14

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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.