Home / 28,766.50-43,100.61-20,405.14

Finding the Fourth Proportional to 28,766.50, 43,100.61 and 20,405.14

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Solution

The fourth proportional to 28,766.50, 43,100.61 and 20,405.14 is: 30,572.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,766.50 : 43,100.61 = 20,405.14 : x
  2. Step 2: Convert to fraction form
    28,766.50/43,100.61 = 20,405.14/x
  3. Step 3: Cross multiply
    28,766.50x = 43,100.61 × 20,405.14
  4. Step 4: Simplify right side
    28,766.50x = 879,473,981.14
  5. Step 5: Solve for x
    x = 879,473,981.14/28,766.50
  6. Step 6: Final answer
    x = 30,572.85

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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.