Home / 28,363.20-39,141.36-15,617.68

Finding the Fourth Proportional to 28,363.20, 39,141.36 and 15,617.68

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Solution

The fourth proportional to 28,363.20, 39,141.36 and 15,617.68 is: 21,552.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,363.20 : 39,141.36 = 15,617.68 : x
  2. Step 2: Convert to fraction form
    28,363.20/39,141.36 = 15,617.68/x
  3. Step 3: Cross multiply
    28,363.20x = 39,141.36 × 15,617.68
  4. Step 4: Simplify right side
    28,363.20x = 611,297,235.24
  5. Step 5: Solve for x
    x = 611,297,235.24/28,363.20
  6. Step 6: Final answer
    x = 21,552.48

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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.