Home / 22,612.20-31,230.38-15,429.81

Finding the Fourth Proportional to 22,612.20, 31,230.38 and 15,429.81

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Solution

The fourth proportional to 22,612.20, 31,230.38 and 15,429.81 is: 21,310.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,612.20 : 31,230.38 = 15,429.81 : x
  2. Step 2: Convert to fraction form
    22,612.20/31,230.38 = 15,429.81/x
  3. Step 3: Cross multiply
    22,612.20x = 31,230.38 × 15,429.81
  4. Step 4: Simplify right side
    22,612.20x = 481,878,752.48
  5. Step 5: Solve for x
    x = 481,878,752.48/22,612.20
  6. Step 6: Final answer
    x = 21,310.56

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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.