Home / 28,422.32-39,223.92-15,847.92

Finding the Fourth Proportional to 28,422.32, 39,223.92 and 15,847.92

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Solution

The fourth proportional to 28,422.32, 39,223.92 and 15,847.92 is: 21,870.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.32 : 39,223.92 = 15,847.92 : x
  2. Step 2: Convert to fraction form
    28,422.32/39,223.92 = 15,847.92/x
  3. Step 3: Cross multiply
    28,422.32x = 39,223.92 × 15,847.92
  4. Step 4: Simplify right side
    28,422.32x = 621,617,546.25
  5. Step 5: Solve for x
    x = 621,617,546.25/28,422.32
  6. Step 6: Final answer
    x = 21,870.75

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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.