Home / 29,989.01-41,386.07-18,665.21

Finding the Fourth Proportional to 29,989.01, 41,386.07 and 18,665.21

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Solution

The fourth proportional to 29,989.01, 41,386.07 and 18,665.21 is: 25,758.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,989.01 : 41,386.07 = 18,665.21 : x
  2. Step 2: Convert to fraction form
    29,989.01/41,386.07 = 18,665.21/x
  3. Step 3: Cross multiply
    29,989.01x = 41,386.07 × 18,665.21
  4. Step 4: Simplify right side
    29,989.01x = 772,479,687.62
  5. Step 5: Solve for x
    x = 772,479,687.62/29,989.01
  6. Step 6: Final answer
    x = 25,758.76

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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.