Home / 20,908.64-28,856.40-12,524.96

Finding the Fourth Proportional to 20,908.64, 28,856.40 and 12,524.96

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Solution

The fourth proportional to 20,908.64, 28,856.40 and 12,524.96 is: 17,285.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.64 : 28,856.40 = 12,524.96 : x
  2. Step 2: Convert to fraction form
    20,908.64/28,856.40 = 12,524.96/x
  3. Step 3: Cross multiply
    20,908.64x = 28,856.40 × 12,524.96
  4. Step 4: Simplify right side
    20,908.64x = 361,425,255.74
  5. Step 5: Solve for x
    x = 361,425,255.74/20,908.64
  6. Step 6: Final answer
    x = 17,285.93

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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.