Home / 20,431.70-30,646.94-5,641.52

Finding the Fourth Proportional to 20,431.70, 30,646.94 and 5,641.52

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Solution

The fourth proportional to 20,431.70, 30,646.94 and 5,641.52 is: 8,462.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.70 : 30,646.94 = 5,641.52 : x
  2. Step 2: Convert to fraction form
    20,431.70/30,646.94 = 5,641.52/x
  3. Step 3: Cross multiply
    20,431.70x = 30,646.94 × 5,641.52
  4. Step 4: Simplify right side
    20,431.70x = 172,895,324.95
  5. Step 5: Solve for x
    x = 172,895,324.95/20,431.70
  6. Step 6: Final answer
    x = 8,462.11

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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.