Home / 15,226.26-21,015.75-9,911.82

Finding the Fourth Proportional to 15,226.26, 21,015.75 and 9,911.82

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Solution

The fourth proportional to 15,226.26, 21,015.75 and 9,911.82 is: 13,680.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,226.26 : 21,015.75 = 9,911.82 : x
  2. Step 2: Convert to fraction form
    15,226.26/21,015.75 = 9,911.82/x
  3. Step 3: Cross multiply
    15,226.26x = 21,015.75 × 9,911.82
  4. Step 4: Simplify right side
    15,226.26x = 208,304,331.17
  5. Step 5: Solve for x
    x = 208,304,331.17/15,226.26
  6. Step 6: Final answer
    x = 13,680.60

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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.