Home / 28,362.14-39,138.22-15,612.84

Finding the Fourth Proportional to 28,362.14, 39,138.22 and 15,612.84

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Solution

The fourth proportional to 28,362.14, 39,138.22 and 15,612.84 is: 21,544.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,362.14 : 39,138.22 = 15,612.84 : x
  2. Step 2: Convert to fraction form
    28,362.14/39,138.22 = 15,612.84/x
  3. Step 3: Cross multiply
    28,362.14x = 39,138.22 × 15,612.84
  4. Step 4: Simplify right side
    28,362.14x = 611,058,766.74
  5. Step 5: Solve for x
    x = 611,058,766.74/28,362.14
  6. Step 6: Final answer
    x = 21,544.88

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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.