Home / 27,785.38-38,342.34-15,207.70

Finding the Fourth Proportional to 27,785.38, 38,342.34 and 15,207.70

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Solution

The fourth proportional to 27,785.38, 38,342.34 and 15,207.70 is: 20,985.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,785.38 : 38,342.34 = 15,207.70 : x
  2. Step 2: Convert to fraction form
    27,785.38/38,342.34 = 15,207.70/x
  3. Step 3: Cross multiply
    27,785.38x = 38,342.34 × 15,207.70
  4. Step 4: Simplify right side
    27,785.38x = 583,098,804.02
  5. Step 5: Solve for x
    x = 583,098,804.02/27,785.38
  6. Step 6: Final answer
    x = 20,985.81

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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.