Home / 31,669.65-43,718.31-20,189.52

Finding the Fourth Proportional to 31,669.65, 43,718.31 and 20,189.52

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Solution

The fourth proportional to 31,669.65, 43,718.31 and 20,189.52 is: 27,870.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,669.65 : 43,718.31 = 20,189.52 : x
  2. Step 2: Convert to fraction form
    31,669.65/43,718.31 = 20,189.52/x
  3. Step 3: Cross multiply
    31,669.65x = 43,718.31 × 20,189.52
  4. Step 4: Simplify right side
    31,669.65x = 882,651,694.11
  5. Step 5: Solve for x
    x = 882,651,694.11/31,669.65
  6. Step 6: Final answer
    x = 27,870.59

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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.