Home / 15,462.21-21,338.01-8,388.69

Finding the Fourth Proportional to 15,462.21, 21,338.01 and 8,388.69

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Solution

The fourth proportional to 15,462.21, 21,338.01 and 8,388.69 is: 11,576.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,462.21 : 21,338.01 = 8,388.69 : x
  2. Step 2: Convert to fraction form
    15,462.21/21,338.01 = 8,388.69/x
  3. Step 3: Cross multiply
    15,462.21x = 21,338.01 × 8,388.69
  4. Step 4: Simplify right side
    15,462.21x = 178,997,951.11
  5. Step 5: Solve for x
    x = 178,997,951.11/15,462.21
  6. Step 6: Final answer
    x = 11,576.48

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Double scale
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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.