Home / 31,555.60-43,548.84-18,131.20

Finding the Fourth Proportional to 31,555.60, 43,548.84 and 18,131.20

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Solution

The fourth proportional to 31,555.60, 43,548.84 and 18,131.20 is: 25,022.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,555.60 : 43,548.84 = 18,131.20 : x
  2. Step 2: Convert to fraction form
    31,555.60/43,548.84 = 18,131.20/x
  3. Step 3: Cross multiply
    31,555.60x = 43,548.84 × 18,131.20
  4. Step 4: Simplify right side
    31,555.60x = 789,592,727.81
  5. Step 5: Solve for x
    x = 789,592,727.81/31,555.60
  6. Step 6: Final answer
    x = 25,022.27

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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.