Home / 23,122.54-31,908-13,561.12

Finding the Fourth Proportional to 23,122.54, 31,908 and 13,561.12

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Solution

The fourth proportional to 23,122.54, 31,908 and 13,561.12 is: 18,713.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,122.54 : 31,908 = 13,561.12 : x
  2. Step 2: Convert to fraction form
    23,122.54/31,908 = 13,561.12/x
  3. Step 3: Cross multiply
    23,122.54x = 31,908 × 13,561.12
  4. Step 4: Simplify right side
    23,122.54x = 432,708,216.96
  5. Step 5: Solve for x
    x = 432,708,216.96/23,122.54
  6. Step 6: Final answer
    x = 18,713.70

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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.