Home / 20,111.78-30,177.72-9,026.39

Finding the Fourth Proportional to 20,111.78, 30,177.72 and 9,026.39

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Solution

The fourth proportional to 20,111.78, 30,177.72 and 9,026.39 is: 13,544.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.78 : 30,177.72 = 9,026.39 : x
  2. Step 2: Convert to fraction form
    20,111.78/30,177.72 = 9,026.39/x
  3. Step 3: Cross multiply
    20,111.78x = 30,177.72 × 9,026.39
  4. Step 4: Simplify right side
    20,111.78x = 272,395,870.03
  5. Step 5: Solve for x
    x = 272,395,870.03/20,111.78
  6. Step 6: Final answer
    x = 13,544.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.