Home / 20,860.27-31,280.38-8,376.95

Finding the Fourth Proportional to 20,860.27, 31,280.38 and 8,376.95

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Solution

The fourth proportional to 20,860.27, 31,280.38 and 8,376.95 is: 12,561.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860.27 : 31,280.38 = 8,376.95 : x
  2. Step 2: Convert to fraction form
    20,860.27/31,280.38 = 8,376.95/x
  3. Step 3: Cross multiply
    20,860.27x = 31,280.38 × 8,376.95
  4. Step 4: Simplify right side
    20,860.27x = 262,034,236.50
  5. Step 5: Solve for x
    x = 262,034,236.50/20,860.27
  6. Step 6: Final answer
    x = 12,561.40

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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.