Home / 12,306.15-16,982.10-7,002.68

Finding the Fourth Proportional to 12,306.15, 16,982.10 and 7,002.68

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Solution

The fourth proportional to 12,306.15, 16,982.10 and 7,002.68 is: 9,663.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.15 : 16,982.10 = 7,002.68 : x
  2. Step 2: Convert to fraction form
    12,306.15/16,982.10 = 7,002.68/x
  3. Step 3: Cross multiply
    12,306.15x = 16,982.10 × 7,002.68
  4. Step 4: Simplify right side
    12,306.15x = 118,920,127.12
  5. Step 5: Solve for x
    x = 118,920,127.12/12,306.15
  6. Step 6: Final answer
    x = 9,663.47

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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.