Home / 15,455.92-21,328.78-8,556.88

Finding the Fourth Proportional to 15,455.92, 21,328.78 and 8,556.88

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Solution

The fourth proportional to 15,455.92, 21,328.78 and 8,556.88 is: 11,808.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.92 : 21,328.78 = 8,556.88 : x
  2. Step 2: Convert to fraction form
    15,455.92/21,328.78 = 8,556.88/x
  3. Step 3: Cross multiply
    15,455.92x = 21,328.78 × 8,556.88
  4. Step 4: Simplify right side
    15,455.92x = 182,507,811.01
  5. Step 5: Solve for x
    x = 182,507,811.01/15,455.92
  6. Step 6: Final answer
    x = 11,808.28

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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.