Home / 31,621.14-43,641.54-18,192.15

Finding the Fourth Proportional to 31,621.14, 43,641.54 and 18,192.15

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Solution

The fourth proportional to 31,621.14, 43,641.54 and 18,192.15 is: 25,107.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,621.14 : 43,641.54 = 18,192.15 : x
  2. Step 2: Convert to fraction form
    31,621.14/43,641.54 = 18,192.15/x
  3. Step 3: Cross multiply
    31,621.14x = 43,641.54 × 18,192.15
  4. Step 4: Simplify right side
    31,621.14x = 793,933,441.91
  5. Step 5: Solve for x
    x = 793,933,441.91/31,621.14
  6. Step 6: Final answer
    x = 25,107.68

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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.