Home / 20,524.76-28,305.40-13,455.08

Finding the Fourth Proportional to 20,524.76, 28,305.40 and 13,455.08

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Solution

The fourth proportional to 20,524.76, 28,305.40 and 13,455.08 is: 18,555.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,524.76 : 28,305.40 = 13,455.08 : x
  2. Step 2: Convert to fraction form
    20,524.76/28,305.40 = 13,455.08/x
  3. Step 3: Cross multiply
    20,524.76x = 28,305.40 × 13,455.08
  4. Step 4: Simplify right side
    20,524.76x = 380,851,421.43
  5. Step 5: Solve for x
    x = 380,851,421.43/20,524.76
  6. Step 6: Final answer
    x = 18,555.71

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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.