Home / 30,632.40-42,284.40-29,789.72

Finding the Fourth Proportional to 30,632.40, 42,284.40 and 29,789.72

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Solution

The fourth proportional to 30,632.40, 42,284.40 and 29,789.72 is: 41,121.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,632.40 : 42,284.40 = 29,789.72 : x
  2. Step 2: Convert to fraction form
    30,632.40/42,284.40 = 29,789.72/x
  3. Step 3: Cross multiply
    30,632.40x = 42,284.40 × 29,789.72
  4. Step 4: Simplify right side
    30,632.40x = 1,259,640,436.37
  5. Step 5: Solve for x
    x = 1,259,640,436.37/30,632.40
  6. Step 6: Final answer
    x = 41,121.18

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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.