Home / 20,737.92-31,106.88-5,155.56

Finding the Fourth Proportional to 20,737.92, 31,106.88 and 5,155.56

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Solution

The fourth proportional to 20,737.92, 31,106.88 and 5,155.56 is: 7,733.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.92 : 31,106.88 = 5,155.56 : x
  2. Step 2: Convert to fraction form
    20,737.92/31,106.88 = 5,155.56/x
  3. Step 3: Cross multiply
    20,737.92x = 31,106.88 × 5,155.56
  4. Step 4: Simplify right side
    20,737.92x = 160,373,386.25
  5. Step 5: Solve for x
    x = 160,373,386.25/20,737.92
  6. Step 6: Final answer
    x = 7,733.34

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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.