Home / 18,967.32-28,454.07-7,122.03

Finding the Fourth Proportional to 18,967.32, 28,454.07 and 7,122.03

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Solution

The fourth proportional to 18,967.32, 28,454.07 and 7,122.03 is: 10,684.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,967.32 : 28,454.07 = 7,122.03 : x
  2. Step 2: Convert to fraction form
    18,967.32/28,454.07 = 7,122.03/x
  3. Step 3: Cross multiply
    18,967.32x = 28,454.07 × 7,122.03
  4. Step 4: Simplify right side
    18,967.32x = 202,650,740.16
  5. Step 5: Solve for x
    x = 202,650,740.16/18,967.32
  6. Step 6: Final answer
    x = 10,684.21

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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.