Home / 31,102.91-42,921.16-16,955.75

Finding the Fourth Proportional to 31,102.91, 42,921.16 and 16,955.75

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Solution

The fourth proportional to 31,102.91, 42,921.16 and 16,955.75 is: 23,398.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,102.91 : 42,921.16 = 16,955.75 : x
  2. Step 2: Convert to fraction form
    31,102.91/42,921.16 = 16,955.75/x
  3. Step 3: Cross multiply
    31,102.91x = 42,921.16 × 16,955.75
  4. Step 4: Simplify right side
    31,102.91x = 727,760,458.67
  5. Step 5: Solve for x
    x = 727,760,458.67/31,102.91
  6. Step 6: Final answer
    x = 23,398.47

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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.