Home / 31,618.31-43,641.47-18,190.94

Finding the Fourth Proportional to 31,618.31, 43,641.47 and 18,190.94

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Solution

The fourth proportional to 31,618.31, 43,641.47 and 18,190.94 is: 25,108.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,618.31 : 43,641.47 = 18,190.94 : x
  2. Step 2: Convert to fraction form
    31,618.31/43,641.47 = 18,190.94/x
  3. Step 3: Cross multiply
    31,618.31x = 43,641.47 × 18,190.94
  4. Step 4: Simplify right side
    31,618.31x = 793,879,271.33
  5. Step 5: Solve for x
    x = 793,879,271.33/31,618.31
  6. Step 6: Final answer
    x = 25,108.21

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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.