Home / 20,434.28-28,199.12-11,482.56

Finding the Fourth Proportional to 20,434.28, 28,199.12 and 11,482.56

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Solution

The fourth proportional to 20,434.28, 28,199.12 and 11,482.56 is: 15,845.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.28 : 28,199.12 = 11,482.56 : x
  2. Step 2: Convert to fraction form
    20,434.28/28,199.12 = 11,482.56/x
  3. Step 3: Cross multiply
    20,434.28x = 28,199.12 × 11,482.56
  4. Step 4: Simplify right side
    20,434.28x = 323,798,029.93
  5. Step 5: Solve for x
    x = 323,798,029.93/20,434.28
  6. Step 6: Final answer
    x = 15,845.83

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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.