Home / 43,665.28-65,500.16-12,505.12

Finding the Fourth Proportional to 43,665.28, 65,500.16 and 12,505.12

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Solution

The fourth proportional to 43,665.28, 65,500.16 and 12,505.12 is: 18,758.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,665.28 : 65,500.16 = 12,505.12 : x
  2. Step 2: Convert to fraction form
    43,665.28/65,500.16 = 12,505.12/x
  3. Step 3: Cross multiply
    43,665.28x = 65,500.16 × 12,505.12
  4. Step 4: Simplify right side
    43,665.28x = 819,087,360.82
  5. Step 5: Solve for x
    x = 819,087,360.82/43,665.28
  6. Step 6: Final answer
    x = 18,758.32

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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.