Home / 12,311.29-16,989.60-7,006.15

Finding the Fourth Proportional to 12,311.29, 16,989.60 and 7,006.15

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Solution

The fourth proportional to 12,311.29, 16,989.60 and 7,006.15 is: 9,668.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,311.29 : 16,989.60 = 7,006.15 : x
  2. Step 2: Convert to fraction form
    12,311.29/16,989.60 = 7,006.15/x
  3. Step 3: Cross multiply
    12,311.29x = 16,989.60 × 7,006.15
  4. Step 4: Simplify right side
    12,311.29x = 119,031,686.04
  5. Step 5: Solve for x
    x = 119,031,686.04/12,311.29
  6. Step 6: Final answer
    x = 9,668.50

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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.