Home / 28,288.14-42,434.40-8,568.30

Finding the Fourth Proportional to 28,288.14, 42,434.40 and 8,568.30

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Solution

The fourth proportional to 28,288.14, 42,434.40 and 8,568.30 is: 12,853.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288.14 : 42,434.40 = 8,568.30 : x
  2. Step 2: Convert to fraction form
    28,288.14/42,434.40 = 8,568.30/x
  3. Step 3: Cross multiply
    28,288.14x = 42,434.40 × 8,568.30
  4. Step 4: Simplify right side
    28,288.14x = 363,590,669.52
  5. Step 5: Solve for x
    x = 363,590,669.52/28,288.14
  6. Step 6: Final answer
    x = 12,853.11

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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.