Home / 20,737.42-31,106.25-5,155.05

Finding the Fourth Proportional to 20,737.42, 31,106.25 and 5,155.05

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Solution

The fourth proportional to 20,737.42, 31,106.25 and 5,155.05 is: 7,732.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.42 : 31,106.25 = 5,155.05 : x
  2. Step 2: Convert to fraction form
    20,737.42/31,106.25 = 5,155.05/x
  3. Step 3: Cross multiply
    20,737.42x = 31,106.25 × 5,155.05
  4. Step 4: Simplify right side
    20,737.42x = 160,354,252.11
  5. Step 5: Solve for x
    x = 160,354,252.11/20,737.42
  6. Step 6: Final answer
    x = 7,732.60

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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.