Home / 15,219.11-21,004.79-9,252.65

Finding the Fourth Proportional to 15,219.11, 21,004.79 and 9,252.65

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Solution

The fourth proportional to 15,219.11, 21,004.79 and 9,252.65 is: 12,770.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219.11 : 21,004.79 = 9,252.65 : x
  2. Step 2: Convert to fraction form
    15,219.11/21,004.79 = 9,252.65/x
  3. Step 3: Cross multiply
    15,219.11x = 21,004.79 × 9,252.65
  4. Step 4: Simplify right side
    15,219.11x = 194,349,976.44
  5. Step 5: Solve for x
    x = 194,349,976.44/15,219.11
  6. Step 6: Final answer
    x = 12,770.13

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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.