Home / 12,279.64-16,925.67-8,689.96

Finding the Fourth Proportional to 12,279.64, 16,925.67 and 8,689.96

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Solution

The fourth proportional to 12,279.64, 16,925.67 and 8,689.96 is: 11,977.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.64 : 16,925.67 = 8,689.96 : x
  2. Step 2: Convert to fraction form
    12,279.64/16,925.67 = 8,689.96/x
  3. Step 3: Cross multiply
    12,279.64x = 16,925.67 × 8,689.96
  4. Step 4: Simplify right side
    12,279.64x = 147,083,395.27
  5. Step 5: Solve for x
    x = 147,083,395.27/12,279.64
  6. Step 6: Final answer
    x = 11,977.83

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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.