Home / 20,133.47-27,784.56-11,181.81

Finding the Fourth Proportional to 20,133.47, 27,784.56 and 11,181.81

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Solution

The fourth proportional to 20,133.47, 27,784.56 and 11,181.81 is: 15,431.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.47 : 27,784.56 = 11,181.81 : x
  2. Step 2: Convert to fraction form
    20,133.47/27,784.56 = 11,181.81/x
  3. Step 3: Cross multiply
    20,133.47x = 27,784.56 × 11,181.81
  4. Step 4: Simplify right side
    20,133.47x = 310,681,545.70
  5. Step 5: Solve for x
    x = 310,681,545.70/20,133.47
  6. Step 6: Final answer
    x = 15,431.10

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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.