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Finding the Fourth Proportional to 28,482.53, 42,739.11 and 11,854.04

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Solution

The fourth proportional to 28,482.53, 42,739.11 and 11,854.04 is: 17,787.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,482.53 : 42,739.11 = 11,854.04 : x
  2. Step 2: Convert to fraction form
    28,482.53/42,739.11 = 11,854.04/x
  3. Step 3: Cross multiply
    28,482.53x = 42,739.11 × 11,854.04
  4. Step 4: Simplify right side
    28,482.53x = 506,630,905.81
  5. Step 5: Solve for x
    x = 506,630,905.81/28,482.53
  6. Step 6: Final answer
    x = 17,787.43

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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.