Home / 20,995.62-28,973.61-11,565.06

Finding the Fourth Proportional to 20,995.62, 28,973.61 and 11,565.06

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Solution

The fourth proportional to 20,995.62, 28,973.61 and 11,565.06 is: 15,959.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.62 : 28,973.61 = 11,565.06 : x
  2. Step 2: Convert to fraction form
    20,995.62/28,973.61 = 11,565.06/x
  3. Step 3: Cross multiply
    20,995.62x = 28,973.61 × 11,565.06
  4. Step 4: Simplify right side
    20,995.62x = 335,081,538.07
  5. Step 5: Solve for x
    x = 335,081,538.07/20,995.62
  6. Step 6: Final answer
    x = 15,959.59

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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.