Home / 20,632.50-28,471.32-12,017.88

Finding the Fourth Proportional to 20,632.50, 28,471.32 and 12,017.88

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Solution

The fourth proportional to 20,632.50, 28,471.32 and 12,017.88 is: 16,583.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.50 : 28,471.32 = 12,017.88 : x
  2. Step 2: Convert to fraction form
    20,632.50/28,471.32 = 12,017.88/x
  3. Step 3: Cross multiply
    20,632.50x = 28,471.32 × 12,017.88
  4. Step 4: Simplify right side
    20,632.50x = 342,164,907.20
  5. Step 5: Solve for x
    x = 342,164,907.20/20,632.50
  6. Step 6: Final answer
    x = 16,583.78

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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.