Home / 20,072.28-27,699.95-11,119.91

Finding the Fourth Proportional to 20,072.28, 27,699.95 and 11,119.91

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Solution

The fourth proportional to 20,072.28, 27,699.95 and 11,119.91 is: 15,345.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.28 : 27,699.95 = 11,119.91 : x
  2. Step 2: Convert to fraction form
    20,072.28/27,699.95 = 11,119.91/x
  3. Step 3: Cross multiply
    20,072.28x = 27,699.95 × 11,119.91
  4. Step 4: Simplify right side
    20,072.28x = 308,020,951.00
  5. Step 5: Solve for x
    x = 308,020,951.00/20,072.28
  6. Step 6: Final answer
    x = 15,345.59

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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.