Home / 20,202.52-27,878.70-11,250.40

Finding the Fourth Proportional to 20,202.52, 27,878.70 and 11,250.40

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Solution

The fourth proportional to 20,202.52, 27,878.70 and 11,250.40 is: 15,525.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,202.52 : 27,878.70 = 11,250.40 : x
  2. Step 2: Convert to fraction form
    20,202.52/27,878.70 = 11,250.40/x
  3. Step 3: Cross multiply
    20,202.52x = 27,878.70 × 11,250.40
  4. Step 4: Simplify right side
    20,202.52x = 313,646,526.48
  5. Step 5: Solve for x
    x = 313,646,526.48/20,202.52
  6. Step 6: Final answer
    x = 15,525.12

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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.