Home / 18,814.91-28,211.56-5,663.39

Finding the Fourth Proportional to 18,814.91, 28,211.56 and 5,663.39

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Solution

The fourth proportional to 18,814.91, 28,211.56 and 5,663.39 is: 8,491.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814.91 : 28,211.56 = 5,663.39 : x
  2. Step 2: Convert to fraction form
    18,814.91/28,211.56 = 5,663.39/x
  3. Step 3: Cross multiply
    18,814.91x = 28,211.56 × 5,663.39
  4. Step 4: Simplify right side
    18,814.91x = 159,772,897.41
  5. Step 5: Solve for x
    x = 159,772,897.41/18,814.91
  6. Step 6: Final answer
    x = 8,491.83

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1.5x scale

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.