Home / 28,201.71-42,363.60-18,335.91

Finding the Fourth Proportional to 28,201.71, 42,363.60 and 18,335.91

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Solution

The fourth proportional to 28,201.71, 42,363.60 and 18,335.91 is: 27,543.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,201.71 : 42,363.60 = 18,335.91 : x
  2. Step 2: Convert to fraction form
    28,201.71/42,363.60 = 18,335.91/x
  3. Step 3: Cross multiply
    28,201.71x = 42,363.60 × 18,335.91
  4. Step 4: Simplify right side
    28,201.71x = 776,775,156.88
  5. Step 5: Solve for x
    x = 776,775,156.88/28,201.71
  6. Step 6: Final answer
    x = 27,543.55

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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.