Home / 12,394.18-18,591.30-8,712.88

Finding the Fourth Proportional to 12,394.18, 18,591.30 and 8,712.88

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Solution

The fourth proportional to 12,394.18, 18,591.30 and 8,712.88 is: 13,069.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,394.18 : 18,591.30 = 8,712.88 : x
  2. Step 2: Convert to fraction form
    12,394.18/18,591.30 = 8,712.88/x
  3. Step 3: Cross multiply
    12,394.18x = 18,591.30 × 8,712.88
  4. Step 4: Simplify right side
    12,394.18x = 161,983,672.99
  5. Step 5: Solve for x
    x = 161,983,672.99/12,394.18
  6. Step 6: Final answer
    x = 13,069.34

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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.