Home / 31,549.75-43,538.69-18,123.60

Finding the Fourth Proportional to 31,549.75, 43,538.69 and 18,123.60

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Solution

The fourth proportional to 31,549.75, 43,538.69 and 18,123.60 is: 25,010.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,549.75 : 43,538.69 = 18,123.60 : x
  2. Step 2: Convert to fraction form
    31,549.75/43,538.69 = 18,123.60/x
  3. Step 3: Cross multiply
    31,549.75x = 43,538.69 × 18,123.60
  4. Step 4: Simplify right side
    31,549.75x = 789,077,802.08
  5. Step 5: Solve for x
    x = 789,077,802.08/31,549.75
  6. Step 6: Final answer
    x = 25,010.59

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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.