Home / 31,008.32-42,800.64-18,441.44

Finding the Fourth Proportional to 31,008.32, 42,800.64 and 18,441.44

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Solution

The fourth proportional to 31,008.32, 42,800.64 and 18,441.44 is: 25,454.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,008.32 : 42,800.64 = 18,441.44 : x
  2. Step 2: Convert to fraction form
    31,008.32/42,800.64 = 18,441.44/x
  3. Step 3: Cross multiply
    31,008.32x = 42,800.64 × 18,441.44
  4. Step 4: Simplify right side
    31,008.32x = 789,305,434.52
  5. Step 5: Solve for x
    x = 789,305,434.52/31,008.32
  6. Step 6: Final answer
    x = 25,454.63

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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.