Home / 15,556.24-21,468-9,591.81

Finding the Fourth Proportional to 15,556.24, 21,468 and 9,591.81

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Solution

The fourth proportional to 15,556.24, 21,468 and 9,591.81 is: 13,236.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,556.24 : 21,468 = 9,591.81 : x
  2. Step 2: Convert to fraction form
    15,556.24/21,468 = 9,591.81/x
  3. Step 3: Cross multiply
    15,556.24x = 21,468 × 9,591.81
  4. Step 4: Simplify right side
    15,556.24x = 205,916,977.08
  5. Step 5: Solve for x
    x = 205,916,977.08/15,556.24
  6. Step 6: Final answer
    x = 13,236.94

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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.