Home / 18,913.15-28,374.29-5,764.72

Finding the Fourth Proportional to 18,913.15, 28,374.29 and 5,764.72

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Solution

The fourth proportional to 18,913.15, 28,374.29 and 5,764.72 is: 8,648.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.15 : 28,374.29 = 5,764.72 : x
  2. Step 2: Convert to fraction form
    18,913.15/28,374.29 = 5,764.72/x
  3. Step 3: Cross multiply
    18,913.15x = 28,374.29 × 5,764.72
  4. Step 4: Simplify right side
    18,913.15x = 163,569,837.05
  5. Step 5: Solve for x
    x = 163,569,837.05/18,913.15
  6. Step 6: Final answer
    x = 8,648.47

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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.