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Finding the Fourth Proportional to 28,873.80, 39,808.80 and 23,680.53

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Solution

The fourth proportional to 28,873.80, 39,808.80 and 23,680.53 is: 32,648.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,873.80 : 39,808.80 = 23,680.53 : x
  2. Step 2: Convert to fraction form
    28,873.80/39,808.80 = 23,680.53/x
  3. Step 3: Cross multiply
    28,873.80x = 39,808.80 × 23,680.53
  4. Step 4: Simplify right side
    28,873.80x = 942,693,482.66
  5. Step 5: Solve for x
    x = 942,693,482.66/28,873.80
  6. Step 6: Final answer
    x = 32,648.75

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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.