Home / 21,789.92-32,678.80-7,748.16

Finding the Fourth Proportional to 21,789.92, 32,678.80 and 7,748.16

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Solution

The fourth proportional to 21,789.92, 32,678.80 and 7,748.16 is: 11,620.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789.92 : 32,678.80 = 7,748.16 : x
  2. Step 2: Convert to fraction form
    21,789.92/32,678.80 = 7,748.16/x
  3. Step 3: Cross multiply
    21,789.92x = 32,678.80 × 7,748.16
  4. Step 4: Simplify right side
    21,789.92x = 253,200,571.01
  5. Step 5: Solve for x
    x = 253,200,571.01/21,789.92
  6. Step 6: Final answer
    x = 11,620.08

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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.