Home / 12,306.18-16,981.90-7,000.88

Finding the Fourth Proportional to 12,306.18, 16,981.90 and 7,000.88

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Solution

The fourth proportional to 12,306.18, 16,981.90 and 7,000.88 is: 9,660.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.18 : 16,981.90 = 7,000.88 : x
  2. Step 2: Convert to fraction form
    12,306.18/16,981.90 = 7,000.88/x
  3. Step 3: Cross multiply
    12,306.18x = 16,981.90 × 7,000.88
  4. Step 4: Simplify right side
    12,306.18x = 118,888,244.07
  5. Step 5: Solve for x
    x = 118,888,244.07/12,306.18
  6. Step 6: Final answer
    x = 9,660.86

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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.