Home / 11,721.68-17,565.72-7,043.60

Finding the Fourth Proportional to 11,721.68, 17,565.72 and 7,043.60

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Solution

The fourth proportional to 11,721.68, 17,565.72 and 7,043.60 is: 10,555.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.68 : 17,565.72 = 7,043.60 : x
  2. Step 2: Convert to fraction form
    11,721.68/17,565.72 = 7,043.60/x
  3. Step 3: Cross multiply
    11,721.68x = 17,565.72 × 7,043.60
  4. Step 4: Simplify right side
    11,721.68x = 123,725,905.39
  5. Step 5: Solve for x
    x = 123,725,905.39/11,721.68
  6. Step 6: Final answer
    x = 10,555.30

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1.5x scale

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.