Home / 28,831.68-39,765.33-18,217.44

Finding the Fourth Proportional to 28,831.68, 39,765.33 and 18,217.44

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Solution

The fourth proportional to 28,831.68, 39,765.33 and 18,217.44 is: 25,125.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,831.68 : 39,765.33 = 18,217.44 : x
  2. Step 2: Convert to fraction form
    28,831.68/39,765.33 = 18,217.44/x
  3. Step 3: Cross multiply
    28,831.68x = 39,765.33 × 18,217.44
  4. Step 4: Simplify right side
    28,831.68x = 724,422,513.36
  5. Step 5: Solve for x
    x = 724,422,513.36/28,831.68
  6. Step 6: Final answer
    x = 25,125.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.