Home / 15,471.33-21,351.03-8,572.65

Finding the Fourth Proportional to 15,471.33, 21,351.03 and 8,572.65

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Solution

The fourth proportional to 15,471.33, 21,351.03 and 8,572.65 is: 11,830.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,471.33 : 21,351.03 = 8,572.65 : x
  2. Step 2: Convert to fraction form
    15,471.33/21,351.03 = 8,572.65/x
  3. Step 3: Cross multiply
    15,471.33x = 21,351.03 × 8,572.65
  4. Step 4: Simplify right side
    15,471.33x = 183,034,907.33
  5. Step 5: Solve for x
    x = 183,034,907.33/15,471.33
  6. Step 6: Final answer
    x = 11,830.59

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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.