Home / 20,353.64-28,079.32-12,794.72

Finding the Fourth Proportional to 20,353.64, 28,079.32 and 12,794.72

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Solution

The fourth proportional to 20,353.64, 28,079.32 and 12,794.72 is: 17,651.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,353.64 : 28,079.32 = 12,794.72 : x
  2. Step 2: Convert to fraction form
    20,353.64/28,079.32 = 12,794.72/x
  3. Step 3: Cross multiply
    20,353.64x = 28,079.32 × 12,794.72
  4. Step 4: Simplify right side
    20,353.64x = 359,267,037.19
  5. Step 5: Solve for x
    x = 359,267,037.19/20,353.64
  6. Step 6: Final answer
    x = 17,651.24

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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.