Home / 20,143.18-27,798.07-11,191.06

Finding the Fourth Proportional to 20,143.18, 27,798.07 and 11,191.06

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Solution

The fourth proportional to 20,143.18, 27,798.07 and 11,191.06 is: 15,443.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.18 : 27,798.07 = 11,191.06 : x
  2. Step 2: Convert to fraction form
    20,143.18/27,798.07 = 11,191.06/x
  3. Step 3: Cross multiply
    20,143.18x = 27,798.07 × 11,191.06
  4. Step 4: Simplify right side
    20,143.18x = 311,089,702.29
  5. Step 5: Solve for x
    x = 311,089,702.29/20,143.18
  6. Step 6: Final answer
    x = 15,443.93

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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.