Home / 12,871.46-19,294.02-8,711.88

Finding the Fourth Proportional to 12,871.46, 19,294.02 and 8,711.88

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Solution

The fourth proportional to 12,871.46, 19,294.02 and 8,711.88 is: 13,058.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,871.46 : 19,294.02 = 8,711.88 : x
  2. Step 2: Convert to fraction form
    12,871.46/19,294.02 = 8,711.88/x
  3. Step 3: Cross multiply
    12,871.46x = 19,294.02 × 8,711.88
  4. Step 4: Simplify right side
    12,871.46x = 168,087,186.96
  5. Step 5: Solve for x
    x = 168,087,186.96/12,871.46
  6. Step 6: Final answer
    x = 13,058.91

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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.