Home / 15,287.54-21,109.34-9,631.37

Finding the Fourth Proportional to 15,287.54, 21,109.34 and 9,631.37

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Solution

The fourth proportional to 15,287.54, 21,109.34 and 9,631.37 is: 13,299.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,287.54 : 21,109.34 = 9,631.37 : x
  2. Step 2: Convert to fraction form
    15,287.54/21,109.34 = 9,631.37/x
  3. Step 3: Cross multiply
    15,287.54x = 21,109.34 × 9,631.37
  4. Step 4: Simplify right side
    15,287.54x = 203,311,940.85
  5. Step 5: Solve for x
    x = 203,311,940.85/15,287.54
  6. Step 6: Final answer
    x = 13,299.20

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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.