Home / 12,561.18-17,335.11-6,972.30

Finding the Fourth Proportional to 12,561.18, 17,335.11 and 6,972.30

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Solution

The fourth proportional to 12,561.18, 17,335.11 and 6,972.30 is: 9,622.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,561.18 : 17,335.11 = 6,972.30 : x
  2. Step 2: Convert to fraction form
    12,561.18/17,335.11 = 6,972.30/x
  3. Step 3: Cross multiply
    12,561.18x = 17,335.11 × 6,972.30
  4. Step 4: Simplify right side
    12,561.18x = 120,865,587.45
  5. Step 5: Solve for x
    x = 120,865,587.45/12,561.18
  6. Step 6: Final answer
    x = 9,622.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.