Home / 18,688.29-28,037.86-5,540.98

Finding the Fourth Proportional to 18,688.29, 28,037.86 and 5,540.98

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Solution

The fourth proportional to 18,688.29, 28,037.86 and 5,540.98 is: 8,313.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.29 : 28,037.86 = 5,540.98 : x
  2. Step 2: Convert to fraction form
    18,688.29/28,037.86 = 5,540.98/x
  3. Step 3: Cross multiply
    18,688.29x = 28,037.86 × 5,540.98
  4. Step 4: Simplify right side
    18,688.29x = 155,357,193.80
  5. Step 5: Solve for x
    x = 155,357,193.80/18,688.29
  6. Step 6: Final answer
    x = 8,313.08

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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.