Home / 31,391.49-43,320.06-18,816.24

Finding the Fourth Proportional to 31,391.49, 43,320.06 and 18,816.24

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Solution

The fourth proportional to 31,391.49, 43,320.06 and 18,816.24 is: 25,966.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,391.49 : 43,320.06 = 18,816.24 : x
  2. Step 2: Convert to fraction form
    31,391.49/43,320.06 = 18,816.24/x
  3. Step 3: Cross multiply
    31,391.49x = 43,320.06 × 18,816.24
  4. Step 4: Simplify right side
    31,391.49x = 815,120,645.77
  5. Step 5: Solve for x
    x = 815,120,645.77/31,391.49
  6. Step 6: Final answer
    x = 25,966.29

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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.