Home / 43,542.85-65,312.91-12,378.10

Finding the Fourth Proportional to 43,542.85, 65,312.91 and 12,378.10

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Solution

The fourth proportional to 43,542.85, 65,312.91 and 12,378.10 is: 18,566.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,542.85 : 65,312.91 = 12,378.10 : x
  2. Step 2: Convert to fraction form
    43,542.85/65,312.91 = 12,378.10/x
  3. Step 3: Cross multiply
    43,542.85x = 65,312.91 × 12,378.10
  4. Step 4: Simplify right side
    43,542.85x = 808,449,812.91
  5. Step 5: Solve for x
    x = 808,449,812.91/43,542.85
  6. Step 6: Final answer
    x = 18,566.76

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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.