Home / 31,118.92-42,944.09-16,971.75

Finding the Fourth Proportional to 31,118.92, 42,944.09 and 16,971.75

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Solution

The fourth proportional to 31,118.92, 42,944.09 and 16,971.75 is: 23,421.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,118.92 : 42,944.09 = 16,971.75 : x
  2. Step 2: Convert to fraction form
    31,118.92/42,944.09 = 16,971.75/x
  3. Step 3: Cross multiply
    31,118.92x = 42,944.09 × 16,971.75
  4. Step 4: Simplify right side
    31,118.92x = 728,836,274.60
  5. Step 5: Solve for x
    x = 728,836,274.60/31,118.92
  6. Step 6: Final answer
    x = 23,421.00

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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.