Home / 18,866.48-28,299.78-5,718.96

Finding the Fourth Proportional to 18,866.48, 28,299.78 and 5,718.96

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Solution

The fourth proportional to 18,866.48, 28,299.78 and 5,718.96 is: 8,578.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,866.48 : 28,299.78 = 5,718.96 : x
  2. Step 2: Convert to fraction form
    18,866.48/28,299.78 = 5,718.96/x
  3. Step 3: Cross multiply
    18,866.48x = 28,299.78 × 5,718.96
  4. Step 4: Simplify right side
    18,866.48x = 161,845,309.83
  5. Step 5: Solve for x
    x = 161,845,309.83/18,866.48
  6. Step 6: Final answer
    x = 8,578.46

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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.