Home / 15,739.14-21,720.62-8,666.22

Finding the Fourth Proportional to 15,739.14, 21,720.62 and 8,666.22

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Solution

The fourth proportional to 15,739.14, 21,720.62 and 8,666.22 is: 11,959.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,739.14 : 21,720.62 = 8,666.22 : x
  2. Step 2: Convert to fraction form
    15,739.14/21,720.62 = 8,666.22/x
  3. Step 3: Cross multiply
    15,739.14x = 21,720.62 × 8,666.22
  4. Step 4: Simplify right side
    15,739.14x = 188,235,671.46
  5. Step 5: Solve for x
    x = 188,235,671.46/15,739.14
  6. Step 6: Final answer
    x = 11,959.72

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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.