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Finding the Fourth Proportional to 20,119.51, 27,763.62 and 11,167.01

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Solution

The fourth proportional to 20,119.51, 27,763.62 and 11,167.01 is: 15,409.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.51 : 27,763.62 = 11,167.01 : x
  2. Step 2: Convert to fraction form
    20,119.51/27,763.62 = 11,167.01/x
  3. Step 3: Cross multiply
    20,119.51x = 27,763.62 × 11,167.01
  4. Step 4: Simplify right side
    20,119.51x = 310,036,649.71
  5. Step 5: Solve for x
    x = 310,036,649.71/20,119.51
  6. Step 6: Final answer
    x = 15,409.75

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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.