Home / 20,079.83-27,710.30-11,127.92

Finding the Fourth Proportional to 20,079.83, 27,710.30 and 11,127.92

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Solution

The fourth proportional to 20,079.83, 27,710.30 and 11,127.92 is: 15,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.83 : 27,710.30 = 11,127.92 : x
  2. Step 2: Convert to fraction form
    20,079.83/27,710.30 = 11,127.92/x
  3. Step 3: Cross multiply
    20,079.83x = 27,710.30 × 11,127.92
  4. Step 4: Simplify right side
    20,079.83x = 308,357,890.84
  5. Step 5: Solve for x
    x = 308,357,890.84/20,079.83
  6. Step 6: Final answer
    x = 15,356.60

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1.5x scale

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.