Home / 28,190.30-38,885.02-18,131.86

Finding the Fourth Proportional to 28,190.30, 38,885.02 and 18,131.86

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Solution

The fourth proportional to 28,190.30, 38,885.02 and 18,131.86 is: 25,010.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,190.30 : 38,885.02 = 18,131.86 : x
  2. Step 2: Convert to fraction form
    28,190.30/38,885.02 = 18,131.86/x
  3. Step 3: Cross multiply
    28,190.30x = 38,885.02 × 18,131.86
  4. Step 4: Simplify right side
    28,190.30x = 705,057,738.74
  5. Step 5: Solve for x
    x = 705,057,738.74/28,190.30
  6. Step 6: Final answer
    x = 25,010.65

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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.