Home / 12,891.42-19,304.28-8,495.55

Finding the Fourth Proportional to 12,891.42, 19,304.28 and 8,495.55

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Solution

The fourth proportional to 12,891.42, 19,304.28 and 8,495.55 is: 12,721.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,891.42 : 19,304.28 = 8,495.55 : x
  2. Step 2: Convert to fraction form
    12,891.42/19,304.28 = 8,495.55/x
  3. Step 3: Cross multiply
    12,891.42x = 19,304.28 × 8,495.55
  4. Step 4: Simplify right side
    12,891.42x = 164,000,475.95
  5. Step 5: Solve for x
    x = 164,000,475.95/12,891.42
  6. Step 6: Final answer
    x = 12,721.68

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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.