Home / 18,981.10-28,474.44-10,211.32

Finding the Fourth Proportional to 18,981.10, 28,474.44 and 10,211.32

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Solution

The fourth proportional to 18,981.10, 28,474.44 and 10,211.32 is: 15,318.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981.10 : 28,474.44 = 10,211.32 : x
  2. Step 2: Convert to fraction form
    18,981.10/28,474.44 = 10,211.32/x
  3. Step 3: Cross multiply
    18,981.10x = 28,474.44 × 10,211.32
  4. Step 4: Simplify right side
    18,981.10x = 290,761,618.66
  5. Step 5: Solve for x
    x = 290,761,618.66/18,981.10
  6. Step 6: Final answer
    x = 15,318.48

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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.