Home / 31,101.77-42,921.07-16,954.61

Finding the Fourth Proportional to 31,101.77, 42,921.07 and 16,954.61

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Solution

The fourth proportional to 31,101.77, 42,921.07 and 16,954.61 is: 23,397.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,101.77 : 42,921.07 = 16,954.61 : x
  2. Step 2: Convert to fraction form
    31,101.77/42,921.07 = 16,954.61/x
  3. Step 3: Cross multiply
    31,101.77x = 42,921.07 × 16,954.61
  4. Step 4: Simplify right side
    31,101.77x = 727,709,745.64
  5. Step 5: Solve for x
    x = 727,709,745.64/31,101.77
  6. Step 6: Final answer
    x = 23,397.69

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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.