Home / 20,775.78-31,160.61-6,737.04

Finding the Fourth Proportional to 20,775.78, 31,160.61 and 6,737.04

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Solution

The fourth proportional to 20,775.78, 31,160.61 and 6,737.04 is: 10,104.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.78 : 31,160.61 = 6,737.04 : x
  2. Step 2: Convert to fraction form
    20,775.78/31,160.61 = 6,737.04/x
  3. Step 3: Cross multiply
    20,775.78x = 31,160.61 × 6,737.04
  4. Step 4: Simplify right side
    20,775.78x = 209,930,275.99
  5. Step 5: Solve for x
    x = 209,930,275.99/20,775.78
  6. Step 6: Final answer
    x = 10,104.57

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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.