Home / 28,299.33-42,455.13-8,579.40

Finding the Fourth Proportional to 28,299.33, 42,455.13 and 8,579.40

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Solution

The fourth proportional to 28,299.33, 42,455.13 and 8,579.40 is: 12,870.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,299.33 : 42,455.13 = 8,579.40 : x
  2. Step 2: Convert to fraction form
    28,299.33/42,455.13 = 8,579.40/x
  3. Step 3: Cross multiply
    28,299.33x = 42,455.13 × 8,579.40
  4. Step 4: Simplify right side
    28,299.33x = 364,239,542.32
  5. Step 5: Solve for x
    x = 364,239,542.32/28,299.33
  6. Step 6: Final answer
    x = 12,870.96

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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.