Home / 11,721.52-16,172.49-7,532.20

Finding the Fourth Proportional to 11,721.52, 16,172.49 and 7,532.20

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Solution

The fourth proportional to 11,721.52, 16,172.49 and 7,532.20 is: 10,392.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.52 : 16,172.49 = 7,532.20 : x
  2. Step 2: Convert to fraction form
    11,721.52/16,172.49 = 7,532.20/x
  3. Step 3: Cross multiply
    11,721.52x = 16,172.49 × 7,532.20
  4. Step 4: Simplify right side
    11,721.52x = 121,814,429.18
  5. Step 5: Solve for x
    x = 121,814,429.18/11,721.52
  6. Step 6: Final answer
    x = 10,392.37

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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.