Home / 19,880.52-29,815.56-10,507.92

Finding the Fourth Proportional to 19,880.52, 29,815.56 and 10,507.92

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Solution

The fourth proportional to 19,880.52, 29,815.56 and 10,507.92 is: 15,759.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.52 : 29,815.56 = 10,507.92 : x
  2. Step 2: Convert to fraction form
    19,880.52/29,815.56 = 10,507.92/x
  3. Step 3: Cross multiply
    19,880.52x = 29,815.56 × 10,507.92
  4. Step 4: Simplify right side
    19,880.52x = 313,299,519.24
  5. Step 5: Solve for x
    x = 313,299,519.24/19,880.52
  6. Step 6: Final answer
    x = 15,759.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.