Home / 18,877.60-28,317-4,837.72

Finding the Fourth Proportional to 18,877.60, 28,317 and 4,837.72

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Solution

The fourth proportional to 18,877.60, 28,317 and 4,837.72 is: 7,256.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,877.60 : 28,317 = 4,837.72 : x
  2. Step 2: Convert to fraction form
    18,877.60/28,317 = 4,837.72/x
  3. Step 3: Cross multiply
    18,877.60x = 28,317 × 4,837.72
  4. Step 4: Simplify right side
    18,877.60x = 136,989,717.24
  5. Step 5: Solve for x
    x = 136,989,717.24/18,877.60
  6. Step 6: Final answer
    x = 7,256.73

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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.