Home / 20,079.47-27,710.66-11,127.01

Finding the Fourth Proportional to 20,079.47, 27,710.66 and 11,127.01

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Solution

The fourth proportional to 20,079.47, 27,710.66 and 11,127.01 is: 15,355.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.47 : 27,710.66 = 11,127.01 : x
  2. Step 2: Convert to fraction form
    20,079.47/27,710.66 = 11,127.01/x
  3. Step 3: Cross multiply
    20,079.47x = 27,710.66 × 11,127.01
  4. Step 4: Simplify right side
    20,079.47x = 308,336,699.87
  5. Step 5: Solve for x
    x = 308,336,699.87/20,079.47
  6. Step 6: Final answer
    x = 15,355.82

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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.