Home / 18,818.76-28,231.80-5,670.48

Finding the Fourth Proportional to 18,818.76, 28,231.80 and 5,670.48

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Solution

The fourth proportional to 18,818.76, 28,231.80 and 5,670.48 is: 8,506.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.76 : 28,231.80 = 5,670.48 : x
  2. Step 2: Convert to fraction form
    18,818.76/28,231.80 = 5,670.48/x
  3. Step 3: Cross multiply
    18,818.76x = 28,231.80 × 5,670.48
  4. Step 4: Simplify right side
    18,818.76x = 160,087,857.26
  5. Step 5: Solve for x
    x = 160,087,857.26/18,818.76
  6. Step 6: Final answer
    x = 8,506.82

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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.