Home / 31,661.10-43,697.70-18,240.12

Finding the Fourth Proportional to 31,661.10, 43,697.70 and 18,240.12

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Solution

The fourth proportional to 31,661.10, 43,697.70 and 18,240.12 is: 25,174.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,661.10 : 43,697.70 = 18,240.12 : x
  2. Step 2: Convert to fraction form
    31,661.10/43,697.70 = 18,240.12/x
  3. Step 3: Cross multiply
    31,661.10x = 43,697.70 × 18,240.12
  4. Step 4: Simplify right side
    31,661.10x = 797,051,291.72
  5. Step 5: Solve for x
    x = 797,051,291.72/31,661.10
  6. Step 6: Final answer
    x = 25,174.47

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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.