Home / 30,661.20-42,301.44-22,716.72

Finding the Fourth Proportional to 30,661.20, 42,301.44 and 22,716.72

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Solution

The fourth proportional to 30,661.20, 42,301.44 and 22,716.72 is: 31,340.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,661.20 : 42,301.44 = 22,716.72 : x
  2. Step 2: Convert to fraction form
    30,661.20/42,301.44 = 22,716.72/x
  3. Step 3: Cross multiply
    30,661.20x = 42,301.44 × 22,716.72
  4. Step 4: Simplify right side
    30,661.20x = 960,949,968.08
  5. Step 5: Solve for x
    x = 960,949,968.08/30,661.20
  6. Step 6: Final answer
    x = 31,340.91

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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.