Home / 15,363.14-21,199.79-8,556.65

Finding the Fourth Proportional to 15,363.14, 21,199.79 and 8,556.65

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Solution

The fourth proportional to 15,363.14, 21,199.79 and 8,556.65 is: 11,807.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,363.14 : 21,199.79 = 8,556.65 : x
  2. Step 2: Convert to fraction form
    15,363.14/21,199.79 = 8,556.65/x
  3. Step 3: Cross multiply
    15,363.14x = 21,199.79 × 8,556.65
  4. Step 4: Simplify right side
    15,363.14x = 181,399,034.32
  5. Step 5: Solve for x
    x = 181,399,034.32/15,363.14
  6. Step 6: Final answer
    x = 11,807.42

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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.