Home / 31,620.65-43,635.27-18,196.21

Finding the Fourth Proportional to 31,620.65, 43,635.27 and 18,196.21

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Solution

The fourth proportional to 31,620.65, 43,635.27 and 18,196.21 is: 25,110.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,620.65 : 43,635.27 = 18,196.21 : x
  2. Step 2: Convert to fraction form
    31,620.65/43,635.27 = 18,196.21/x
  3. Step 3: Cross multiply
    31,620.65x = 43,635.27 × 18,196.21
  4. Step 4: Simplify right side
    31,620.65x = 793,996,659.11
  5. Step 5: Solve for x
    x = 793,996,659.11/31,620.65
  6. Step 6: Final answer
    x = 25,110.07

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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.