Home / 27,685.11-38,192.17-18,120.79

Finding the Fourth Proportional to 27,685.11, 38,192.17 and 18,120.79

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Solution

The fourth proportional to 27,685.11, 38,192.17 and 18,120.79 is: 24,998.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,685.11 : 38,192.17 = 18,120.79 : x
  2. Step 2: Convert to fraction form
    27,685.11/38,192.17 = 18,120.79/x
  3. Step 3: Cross multiply
    27,685.11x = 38,192.17 × 18,120.79
  4. Step 4: Simplify right side
    27,685.11x = 692,072,292.21
  5. Step 5: Solve for x
    x = 692,072,292.21/27,685.11
  6. Step 6: Final answer
    x = 24,998.00

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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.