Home / 38,520.51-57,741.12-18,774.64

Finding the Fourth Proportional to 38,520.51, 57,741.12 and 18,774.64

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Solution

The fourth proportional to 38,520.51, 57,741.12 and 18,774.64 is: 28,142.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,520.51 : 57,741.12 = 18,774.64 : x
  2. Step 2: Convert to fraction form
    38,520.51/57,741.12 = 18,774.64/x
  3. Step 3: Cross multiply
    38,520.51x = 57,741.12 × 18,774.64
  4. Step 4: Simplify right side
    38,520.51x = 1,084,068,741.20
  5. Step 5: Solve for x
    x = 1,084,068,741.20/38,520.51
  6. Step 6: Final answer
    x = 28,142.64

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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.