Home / 27,997.80-38,624.34-18,435.12

Finding the Fourth Proportional to 27,997.80, 38,624.34 and 18,435.12

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Solution

The fourth proportional to 27,997.80, 38,624.34 and 18,435.12 is: 25,432.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,997.80 : 38,624.34 = 18,435.12 : x
  2. Step 2: Convert to fraction form
    27,997.80/38,624.34 = 18,435.12/x
  3. Step 3: Cross multiply
    27,997.80x = 38,624.34 × 18,435.12
  4. Step 4: Simplify right side
    27,997.80x = 712,044,342.82
  5. Step 5: Solve for x
    x = 712,044,342.82/27,997.80
  6. Step 6: Final answer
    x = 25,432.15

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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.