Home / 19,887.50-27,444.75-11,508.86

Finding the Fourth Proportional to 19,887.50, 27,444.75 and 11,508.86

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Solution

The fourth proportional to 19,887.50, 27,444.75 and 11,508.86 is: 15,882.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,887.50 : 27,444.75 = 11,508.86 : x
  2. Step 2: Convert to fraction form
    19,887.50/27,444.75 = 11,508.86/x
  3. Step 3: Cross multiply
    19,887.50x = 27,444.75 × 11,508.86
  4. Step 4: Simplify right side
    19,887.50x = 315,857,785.49
  5. Step 5: Solve for x
    x = 315,857,785.49/19,887.50
  6. Step 6: Final answer
    x = 15,882.23

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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.