Home / 31,118.08-42,944.64-19,959.04

Finding the Fourth Proportional to 31,118.08, 42,944.64 and 19,959.04

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Solution

The fourth proportional to 31,118.08, 42,944.64 and 19,959.04 is: 27,544.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,118.08 : 42,944.64 = 19,959.04 : x
  2. Step 2: Convert to fraction form
    31,118.08/42,944.64 = 19,959.04/x
  3. Step 3: Cross multiply
    31,118.08x = 42,944.64 × 19,959.04
  4. Step 4: Simplify right side
    31,118.08x = 857,133,787.55
  5. Step 5: Solve for x
    x = 857,133,787.55/31,118.08
  6. Step 6: Final answer
    x = 27,544.56

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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.