Home / 28,439.67-42,641.25-11,811.18

Finding the Fourth Proportional to 28,439.67, 42,641.25 and 11,811.18

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Solution

The fourth proportional to 28,439.67, 42,641.25 and 11,811.18 is: 17,709.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,439.67 : 42,641.25 = 11,811.18 : x
  2. Step 2: Convert to fraction form
    28,439.67/42,641.25 = 11,811.18/x
  3. Step 3: Cross multiply
    28,439.67x = 42,641.25 × 11,811.18
  4. Step 4: Simplify right side
    28,439.67x = 503,643,479.18
  5. Step 5: Solve for x
    x = 503,643,479.18/28,439.67
  6. Step 6: Final answer
    x = 17,709.19

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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.