Home / 31,494.70-43,447.37-20,155.10

Finding the Fourth Proportional to 31,494.70, 43,447.37 and 20,155.10

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Solution

The fourth proportional to 31,494.70, 43,447.37 and 20,155.10 is: 27,804.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,494.70 : 43,447.37 = 20,155.10 : x
  2. Step 2: Convert to fraction form
    31,494.70/43,447.37 = 20,155.10/x
  3. Step 3: Cross multiply
    31,494.70x = 43,447.37 × 20,155.10
  4. Step 4: Simplify right side
    31,494.70x = 875,686,334.06
  5. Step 5: Solve for x
    x = 875,686,334.06/31,494.70
  6. Step 6: Final answer
    x = 27,804.25

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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.