Home / 31,120.89-42,939.44-17,691.08

Finding the Fourth Proportional to 31,120.89, 42,939.44 and 17,691.08

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Solution

The fourth proportional to 31,120.89, 42,939.44 and 17,691.08 is: 24,409.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,120.89 : 42,939.44 = 17,691.08 : x
  2. Step 2: Convert to fraction form
    31,120.89/42,939.44 = 17,691.08/x
  3. Step 3: Cross multiply
    31,120.89x = 42,939.44 × 17,691.08
  4. Step 4: Simplify right side
    31,120.89x = 759,645,219.77
  5. Step 5: Solve for x
    x = 759,645,219.77/31,120.89
  6. Step 6: Final answer
    x = 24,409.50

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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.