Home / 12,101.78-18,154.79-5,528.63

Finding the Fourth Proportional to 12,101.78, 18,154.79 and 5,528.63

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Solution

The fourth proportional to 12,101.78, 18,154.79 and 5,528.63 is: 8,293.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,101.78 : 18,154.79 = 5,528.63 : x
  2. Step 2: Convert to fraction form
    12,101.78/18,154.79 = 5,528.63/x
  3. Step 3: Cross multiply
    12,101.78x = 18,154.79 × 5,528.63
  4. Step 4: Simplify right side
    12,101.78x = 100,370,998.22
  5. Step 5: Solve for x
    x = 100,370,998.22/12,101.78
  6. Step 6: Final answer
    x = 8,293.91

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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.