Home / 20,542.31-30,813.50-4,959.93

Finding the Fourth Proportional to 20,542.31, 30,813.50 and 4,959.93

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Solution

The fourth proportional to 20,542.31, 30,813.50 and 4,959.93 is: 7,439.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,542.31 : 30,813.50 = 4,959.93 : x
  2. Step 2: Convert to fraction form
    20,542.31/30,813.50 = 4,959.93/x
  3. Step 3: Cross multiply
    20,542.31x = 30,813.50 × 4,959.93
  4. Step 4: Simplify right side
    20,542.31x = 152,832,903.11
  5. Step 5: Solve for x
    x = 152,832,903.11/20,542.31
  6. Step 6: Final answer
    x = 7,439.91

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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.