Home / 43,618.52-65,430.96-12,456.20

Finding the Fourth Proportional to 43,618.52, 65,430.96 and 12,456.20

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Solution

The fourth proportional to 43,618.52, 65,430.96 and 12,456.20 is: 18,685.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,618.52 : 65,430.96 = 12,456.20 : x
  2. Step 2: Convert to fraction form
    43,618.52/65,430.96 = 12,456.20/x
  3. Step 3: Cross multiply
    43,618.52x = 65,430.96 × 12,456.20
  4. Step 4: Simplify right side
    43,618.52x = 815,021,123.95
  5. Step 5: Solve for x
    x = 815,021,123.95/43,618.52
  6. Step 6: Final answer
    x = 18,685.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.