Home / 21,426.44-29,565.86-11,865.60

Finding the Fourth Proportional to 21,426.44, 29,565.86 and 11,865.60

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Solution

The fourth proportional to 21,426.44, 29,565.86 and 11,865.60 is: 16,373.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,426.44 : 29,565.86 = 11,865.60 : x
  2. Step 2: Convert to fraction form
    21,426.44/29,565.86 = 11,865.60/x
  3. Step 3: Cross multiply
    21,426.44x = 29,565.86 × 11,865.60
  4. Step 4: Simplify right side
    21,426.44x = 350,816,668.42
  5. Step 5: Solve for x
    x = 350,816,668.42/21,426.44
  6. Step 6: Final answer
    x = 16,373.07

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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.