Home / 31,418.41-43,325.26-20,804.17

Finding the Fourth Proportional to 31,418.41, 43,325.26 and 20,804.17

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Solution

The fourth proportional to 31,418.41, 43,325.26 and 20,804.17 is: 28,688.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,418.41 : 43,325.26 = 20,804.17 : x
  2. Step 2: Convert to fraction form
    31,418.41/43,325.26 = 20,804.17/x
  3. Step 3: Cross multiply
    31,418.41x = 43,325.26 × 20,804.17
  4. Step 4: Simplify right side
    31,418.41x = 901,346,074.33
  5. Step 5: Solve for x
    x = 901,346,074.33/31,418.41
  6. Step 6: Final answer
    x = 28,688.47

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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.