Home / 22,801.70-31,463.29-12,728.68

Finding the Fourth Proportional to 22,801.70, 31,463.29 and 12,728.68

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Solution

The fourth proportional to 22,801.70, 31,463.29 and 12,728.68 is: 17,563.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,801.70 : 31,463.29 = 12,728.68 : x
  2. Step 2: Convert to fraction form
    22,801.70/31,463.29 = 12,728.68/x
  3. Step 3: Cross multiply
    22,801.70x = 31,463.29 × 12,728.68
  4. Step 4: Simplify right side
    22,801.70x = 400,486,150.16
  5. Step 5: Solve for x
    x = 400,486,150.16/22,801.70
  6. Step 6: Final answer
    x = 17,563.87

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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.