Home / 12,885.22-19,326.88-4,117.78

Finding the Fourth Proportional to 12,885.22, 19,326.88 and 4,117.78

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Solution

The fourth proportional to 12,885.22, 19,326.88 and 4,117.78 is: 6,176.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.22 : 19,326.88 = 4,117.78 : x
  2. Step 2: Convert to fraction form
    12,885.22/19,326.88 = 4,117.78/x
  3. Step 3: Cross multiply
    12,885.22x = 19,326.88 × 4,117.78
  4. Step 4: Simplify right side
    12,885.22x = 79,583,839.93
  5. Step 5: Solve for x
    x = 79,583,839.93/12,885.22
  6. Step 6: Final answer
    x = 6,176.37

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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.