Home / 31,621.65-43,636.65-18,197.21

Finding the Fourth Proportional to 31,621.65, 43,636.65 and 18,197.21

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Solution

The fourth proportional to 31,621.65, 43,636.65 and 18,197.21 is: 25,111.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,621.65 : 43,636.65 = 18,197.21 : x
  2. Step 2: Convert to fraction form
    31,621.65/43,636.65 = 18,197.21/x
  3. Step 3: Cross multiply
    31,621.65x = 43,636.65 × 18,197.21
  4. Step 4: Simplify right side
    31,621.65x = 794,065,283.75
  5. Step 5: Solve for x
    x = 794,065,283.75/31,621.65
  6. Step 6: Final answer
    x = 25,111.44

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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.