Home / 28,394.18-39,163.11-18,317.51

Finding the Fourth Proportional to 28,394.18, 39,163.11 and 18,317.51

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Solution

The fourth proportional to 28,394.18, 39,163.11 and 18,317.51 is: 25,264.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,394.18 : 39,163.11 = 18,317.51 : x
  2. Step 2: Convert to fraction form
    28,394.18/39,163.11 = 18,317.51/x
  3. Step 3: Cross multiply
    28,394.18x = 39,163.11 × 18,317.51
  4. Step 4: Simplify right side
    28,394.18x = 717,370,463.24
  5. Step 5: Solve for x
    x = 717,370,463.24/28,394.18
  6. Step 6: Final answer
    x = 25,264.71

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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.