Home / 40,642.98-60,942.20-12,555.42

Finding the Fourth Proportional to 40,642.98, 60,942.20 and 12,555.42

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Solution

The fourth proportional to 40,642.98, 60,942.20 and 12,555.42 is: 18,826.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,642.98 : 60,942.20 = 12,555.42 : x
  2. Step 2: Convert to fraction form
    40,642.98/60,942.20 = 12,555.42/x
  3. Step 3: Cross multiply
    40,642.98x = 60,942.20 × 12,555.42
  4. Step 4: Simplify right side
    40,642.98x = 765,154,853.95
  5. Step 5: Solve for x
    x = 765,154,853.95/40,642.98
  6. Step 6: Final answer
    x = 18,826.25

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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.