Home / 15,226.48-21,007.80-8,511.16

Finding the Fourth Proportional to 15,226.48, 21,007.80 and 8,511.16

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Solution

The fourth proportional to 15,226.48, 21,007.80 and 8,511.16 is: 11,742.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,226.48 : 21,007.80 = 8,511.16 : x
  2. Step 2: Convert to fraction form
    15,226.48/21,007.80 = 8,511.16/x
  3. Step 3: Cross multiply
    15,226.48x = 21,007.80 × 8,511.16
  4. Step 4: Simplify right side
    15,226.48x = 178,800,747.05
  5. Step 5: Solve for x
    x = 178,800,747.05/15,226.48
  6. Step 6: Final answer
    x = 11,742.75

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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.