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Finding the Fourth Proportional to 28,245.14, 42,368.04 and 8,523.87

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Solution

The fourth proportional to 28,245.14, 42,368.04 and 8,523.87 is: 12,785.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245.14 : 42,368.04 = 8,523.87 : x
  2. Step 2: Convert to fraction form
    28,245.14/42,368.04 = 8,523.87/x
  3. Step 3: Cross multiply
    28,245.14x = 42,368.04 × 8,523.87
  4. Step 4: Simplify right side
    28,245.14x = 361,139,665.11
  5. Step 5: Solve for x
    x = 361,139,665.11/28,245.14
  6. Step 6: Final answer
    x = 12,785.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.