Home / 40,267.80-60,378.06-12,179.40

Finding the Fourth Proportional to 40,267.80, 60,378.06 and 12,179.40

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Solution

The fourth proportional to 40,267.80, 60,378.06 and 12,179.40 is: 18,261.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,267.80 : 60,378.06 = 12,179.40 : x
  2. Step 2: Convert to fraction form
    40,267.80/60,378.06 = 12,179.40/x
  3. Step 3: Cross multiply
    40,267.80x = 60,378.06 × 12,179.40
  4. Step 4: Simplify right side
    40,267.80x = 735,368,543.96
  5. Step 5: Solve for x
    x = 735,368,543.96/40,267.80
  6. Step 6: Final answer
    x = 18,261.95

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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.