Home / 31,645.77-43,671.09-18,212.13

Finding the Fourth Proportional to 31,645.77, 43,671.09 and 18,212.13

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Solution

The fourth proportional to 31,645.77, 43,671.09 and 18,212.13 is: 25,132.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,645.77 : 43,671.09 = 18,212.13 : x
  2. Step 2: Convert to fraction form
    31,645.77/43,671.09 = 18,212.13/x
  3. Step 3: Cross multiply
    31,645.77x = 43,671.09 × 18,212.13
  4. Step 4: Simplify right side
    31,645.77x = 795,343,568.32
  5. Step 5: Solve for x
    x = 795,343,568.32/31,645.77
  6. Step 6: Final answer
    x = 25,132.70

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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.