Home / 15,477.28-21,358.56-8,404

Finding the Fourth Proportional to 15,477.28, 21,358.56 and 8,404

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Solution

The fourth proportional to 15,477.28, 21,358.56 and 8,404 is: 11,597.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,477.28 : 21,358.56 = 8,404 : x
  2. Step 2: Convert to fraction form
    15,477.28/21,358.56 = 8,404/x
  3. Step 3: Cross multiply
    15,477.28x = 21,358.56 × 8,404
  4. Step 4: Simplify right side
    15,477.28x = 179,497,338.24
  5. Step 5: Solve for x
    x = 179,497,338.24/15,477.28
  6. Step 6: Final answer
    x = 11,597.47

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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.