Home / 28,398.75-42,603.60-12,816.38

Finding the Fourth Proportional to 28,398.75, 42,603.60 and 12,816.38

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Solution

The fourth proportional to 28,398.75, 42,603.60 and 12,816.38 is: 19,227.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,398.75 : 42,603.60 = 12,816.38 : x
  2. Step 2: Convert to fraction form
    28,398.75/42,603.60 = 12,816.38/x
  3. Step 3: Cross multiply
    28,398.75x = 42,603.60 × 12,816.38
  4. Step 4: Simplify right side
    28,398.75x = 546,023,926.97
  5. Step 5: Solve for x
    x = 546,023,926.97/28,398.75
  6. Step 6: Final answer
    x = 19,227.04

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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.