Home / 20,655.60-28,504.83-12,158.04

Finding the Fourth Proportional to 20,655.60, 28,504.83 and 12,158.04

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Solution

The fourth proportional to 20,655.60, 28,504.83 and 12,158.04 is: 16,778.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.60 : 28,504.83 = 12,158.04 : x
  2. Step 2: Convert to fraction form
    20,655.60/28,504.83 = 12,158.04/x
  3. Step 3: Cross multiply
    20,655.60x = 28,504.83 × 12,158.04
  4. Step 4: Simplify right side
    20,655.60x = 346,562,863.33
  5. Step 5: Solve for x
    x = 346,562,863.33/20,655.60
  6. Step 6: Final answer
    x = 16,778.16

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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.