Home / 15,369.20-21,208.16-11,338.22

Finding the Fourth Proportional to 15,369.20, 21,208.16 and 11,338.22

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Solution

The fourth proportional to 15,369.20, 21,208.16 and 11,338.22 is: 15,645.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,369.20 : 21,208.16 = 11,338.22 : x
  2. Step 2: Convert to fraction form
    15,369.20/21,208.16 = 11,338.22/x
  3. Step 3: Cross multiply
    15,369.20x = 21,208.16 × 11,338.22
  4. Step 4: Simplify right side
    15,369.20x = 240,462,621.14
  5. Step 5: Solve for x
    x = 240,462,621.14/15,369.20
  6. Step 6: Final answer
    x = 15,645.75

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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.