Home / 31,549.81-43,538.64-18,121.93

Finding the Fourth Proportional to 31,549.81, 43,538.64 and 18,121.93

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Solution

The fourth proportional to 31,549.81, 43,538.64 and 18,121.93 is: 25,008.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,549.81 : 43,538.64 = 18,121.93 : x
  2. Step 2: Convert to fraction form
    31,549.81/43,538.64 = 18,121.93/x
  3. Step 3: Cross multiply
    31,549.81x = 43,538.64 × 18,121.93
  4. Step 4: Simplify right side
    31,549.81x = 789,004,186.38
  5. Step 5: Solve for x
    x = 789,004,186.38/31,549.81
  6. Step 6: Final answer
    x = 25,008.21

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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.