Home / 28,720.12-43,001.88-14,839.96

Finding the Fourth Proportional to 28,720.12, 43,001.88 and 14,839.96

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Solution

The fourth proportional to 28,720.12, 43,001.88 and 14,839.96 is: 22,219.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.12 : 43,001.88 = 14,839.96 : x
  2. Step 2: Convert to fraction form
    28,720.12/43,001.88 = 14,839.96/x
  3. Step 3: Cross multiply
    28,720.12x = 43,001.88 × 14,839.96
  4. Step 4: Simplify right side
    28,720.12x = 638,146,179.12
  5. Step 5: Solve for x
    x = 638,146,179.12/28,720.12
  6. Step 6: Final answer
    x = 22,219.48

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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.