Home / 31,025.46-42,801.26-20,950.68

Finding the Fourth Proportional to 31,025.46, 42,801.26 and 20,950.68

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Solution

The fourth proportional to 31,025.46, 42,801.26 and 20,950.68 is: 28,902.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,025.46 : 42,801.26 = 20,950.68 : x
  2. Step 2: Convert to fraction form
    31,025.46/42,801.26 = 20,950.68/x
  3. Step 3: Cross multiply
    31,025.46x = 42,801.26 × 20,950.68
  4. Step 4: Simplify right side
    31,025.46x = 896,715,501.86
  5. Step 5: Solve for x
    x = 896,715,501.86/31,025.46
  6. Step 6: Final answer
    x = 28,902.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.