Home / 43,990.14-65,985.13-12,400.14

Finding the Fourth Proportional to 43,990.14, 65,985.13 and 12,400.14

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Solution

The fourth proportional to 43,990.14, 65,985.13 and 12,400.14 is: 18,600.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,990.14 : 65,985.13 = 12,400.14 : x
  2. Step 2: Convert to fraction form
    43,990.14/65,985.13 = 12,400.14/x
  3. Step 3: Cross multiply
    43,990.14x = 65,985.13 × 12,400.14
  4. Step 4: Simplify right side
    43,990.14x = 818,224,741.70
  5. Step 5: Solve for x
    x = 818,224,741.70/43,990.14
  6. Step 6: Final answer
    x = 18,600.19

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Similar ratio
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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.