Home / 20,993.15-28,974.76-12,500.24

Finding the Fourth Proportional to 20,993.15, 28,974.76 and 12,500.24

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Solution

The fourth proportional to 20,993.15, 28,974.76 and 12,500.24 is: 17,252.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993.15 : 28,974.76 = 12,500.24 : x
  2. Step 2: Convert to fraction form
    20,993.15/28,974.76 = 12,500.24/x
  3. Step 3: Cross multiply
    20,993.15x = 28,974.76 × 12,500.24
  4. Step 4: Simplify right side
    20,993.15x = 362,191,532.68
  5. Step 5: Solve for x
    x = 362,191,532.68/20,993.15
  6. Step 6: Final answer
    x = 17,252.84

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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.