Home / 20,626.68-28,458.28-12,126.08

Finding the Fourth Proportional to 20,626.68, 28,458.28 and 12,126.08

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Solution

The fourth proportional to 20,626.68, 28,458.28 and 12,126.08 is: 16,730.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,626.68 : 28,458.28 = 12,126.08 : x
  2. Step 2: Convert to fraction form
    20,626.68/28,458.28 = 12,126.08/x
  3. Step 3: Cross multiply
    20,626.68x = 28,458.28 × 12,126.08
  4. Step 4: Simplify right side
    20,626.68x = 345,087,379.94
  5. Step 5: Solve for x
    x = 345,087,379.94/20,626.68
  6. Step 6: Final answer
    x = 16,730.15

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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.