Home / 40,520.74-60,783-12,439.66

Finding the Fourth Proportional to 40,520.74, 60,783 and 12,439.66

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Solution

The fourth proportional to 40,520.74, 60,783 and 12,439.66 is: 18,660.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,520.74 : 60,783 = 12,439.66 : x
  2. Step 2: Convert to fraction form
    40,520.74/60,783 = 12,439.66/x
  3. Step 3: Cross multiply
    40,520.74x = 60,783 × 12,439.66
  4. Step 4: Simplify right side
    40,520.74x = 756,119,853.78
  5. Step 5: Solve for x
    x = 756,119,853.78/40,520.74
  6. Step 6: Final answer
    x = 18,660.07

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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.