Home / 40,040.63-55,256.23-21,891.72

Finding the Fourth Proportional to 40,040.63, 55,256.23 and 21,891.72

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Solution

The fourth proportional to 40,040.63, 55,256.23 and 21,891.72 is: 30,210.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,040.63 : 55,256.23 = 21,891.72 : x
  2. Step 2: Convert to fraction form
    40,040.63/55,256.23 = 21,891.72/x
  3. Step 3: Cross multiply
    40,040.63x = 55,256.23 × 21,891.72
  4. Step 4: Simplify right side
    40,040.63x = 1,209,653,716.03
  5. Step 5: Solve for x
    x = 1,209,653,716.03/40,040.63
  6. Step 6: Final answer
    x = 30,210.66

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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.