Home / 28,339.11-42,673.32-20,995.65

Finding the Fourth Proportional to 28,339.11, 42,673.32 and 20,995.65

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Solution

The fourth proportional to 28,339.11, 42,673.32 and 20,995.65 is: 31,615.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,339.11 : 42,673.32 = 20,995.65 : x
  2. Step 2: Convert to fraction form
    28,339.11/42,673.32 = 20,995.65/x
  3. Step 3: Cross multiply
    28,339.11x = 42,673.32 × 20,995.65
  4. Step 4: Simplify right side
    28,339.11x = 895,954,091.06
  5. Step 5: Solve for x
    x = 895,954,091.06/28,339.11
  6. Step 6: Final answer
    x = 31,615.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.