Home / 31,538.67-43,529.67-18,119.13

Finding the Fourth Proportional to 31,538.67, 43,529.67 and 18,119.13

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Solution

The fourth proportional to 31,538.67, 43,529.67 and 18,119.13 is: 25,008.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,538.67 : 43,529.67 = 18,119.13 : x
  2. Step 2: Convert to fraction form
    31,538.67/43,529.67 = 18,119.13/x
  3. Step 3: Cross multiply
    31,538.67x = 43,529.67 × 18,119.13
  4. Step 4: Simplify right side
    31,538.67x = 788,719,749.59
  5. Step 5: Solve for x
    x = 788,719,749.59/31,538.67
  6. Step 6: Final answer
    x = 25,008.02

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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.