Home / 20,145.52-27,800.40-11,192.50

Finding the Fourth Proportional to 20,145.52, 27,800.40 and 11,192.50

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Solution

The fourth proportional to 20,145.52, 27,800.40 and 11,192.50 is: 15,445.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.52 : 27,800.40 = 11,192.50 : x
  2. Step 2: Convert to fraction form
    20,145.52/27,800.40 = 11,192.50/x
  3. Step 3: Cross multiply
    20,145.52x = 27,800.40 × 11,192.50
  4. Step 4: Simplify right side
    20,145.52x = 311,155,977
  5. Step 5: Solve for x
    x = 311,155,977/20,145.52
  6. Step 6: Final answer
    x = 15,445.42

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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.