Home / 42,528.12-63,789.60-18,828.75

Finding the Fourth Proportional to 42,528.12, 63,789.60 and 18,828.75

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Solution

The fourth proportional to 42,528.12, 63,789.60 and 18,828.75 is: 28,241.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,528.12 : 63,789.60 = 18,828.75 : x
  2. Step 2: Convert to fraction form
    42,528.12/63,789.60 = 18,828.75/x
  3. Step 3: Cross multiply
    42,528.12x = 63,789.60 × 18,828.75
  4. Step 4: Simplify right side
    42,528.12x = 1,201,078,687.86
  5. Step 5: Solve for x
    x = 1,201,078,687.86/42,528.12
  6. Step 6: Final answer
    x = 28,241.99

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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.