Home / 28,338.78-39,116.25-18,267.24

Finding the Fourth Proportional to 28,338.78, 39,116.25 and 18,267.24

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Solution

The fourth proportional to 28,338.78, 39,116.25 and 18,267.24 is: 25,214.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,338.78 : 39,116.25 = 18,267.24 : x
  2. Step 2: Convert to fraction form
    28,338.78/39,116.25 = 18,267.24/x
  3. Step 3: Cross multiply
    28,338.78x = 39,116.25 × 18,267.24
  4. Step 4: Simplify right side
    28,338.78x = 714,545,926.65
  5. Step 5: Solve for x
    x = 714,545,926.65/28,338.78
  6. Step 6: Final answer
    x = 25,214.42

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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.