Home / 31,548.81-43,537.26-18,120.93

Finding the Fourth Proportional to 31,548.81, 43,537.26 and 18,120.93

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Solution

The fourth proportional to 31,548.81, 43,537.26 and 18,120.93 is: 25,006.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,548.81 : 43,537.26 = 18,120.93 : x
  2. Step 2: Convert to fraction form
    31,548.81/43,537.26 = 18,120.93/x
  3. Step 3: Cross multiply
    31,548.81x = 43,537.26 × 18,120.93
  4. Step 4: Simplify right side
    31,548.81x = 788,935,640.85
  5. Step 5: Solve for x
    x = 788,935,640.85/31,548.81
  6. Step 6: Final answer
    x = 25,006.83

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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.