Home / 15,631.36-21,571.52-9,344

Finding the Fourth Proportional to 15,631.36, 21,571.52 and 9,344

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Solution

The fourth proportional to 15,631.36, 21,571.52 and 9,344 is: 12,894.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,631.36 : 21,571.52 = 9,344 : x
  2. Step 2: Convert to fraction form
    15,631.36/21,571.52 = 9,344/x
  3. Step 3: Cross multiply
    15,631.36x = 21,571.52 × 9,344
  4. Step 4: Simplify right side
    15,631.36x = 201,564,282.88
  5. Step 5: Solve for x
    x = 201,564,282.88/15,631.36
  6. Step 6: Final answer
    x = 12,894.87

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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.