Home / 26,142.81-39,192.31-18,222.09

Finding the Fourth Proportional to 26,142.81, 39,192.31 and 18,222.09

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Solution

The fourth proportional to 26,142.81, 39,192.31 and 18,222.09 is: 27,317.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,142.81 : 39,192.31 = 18,222.09 : x
  2. Step 2: Convert to fraction form
    26,142.81/39,192.31 = 18,222.09/x
  3. Step 3: Cross multiply
    26,142.81x = 39,192.31 × 18,222.09
  4. Step 4: Simplify right side
    26,142.81x = 714,165,800.13
  5. Step 5: Solve for x
    x = 714,165,800.13/26,142.81
  6. Step 6: Final answer
    x = 27,317.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.