Home / 20,436.18-28,202.43-11,483.15

Finding the Fourth Proportional to 20,436.18, 28,202.43 and 11,483.15

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Solution

The fourth proportional to 20,436.18, 28,202.43 and 11,483.15 is: 15,847.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.18 : 28,202.43 = 11,483.15 : x
  2. Step 2: Convert to fraction form
    20,436.18/28,202.43 = 11,483.15/x
  3. Step 3: Cross multiply
    20,436.18x = 28,202.43 × 11,483.15
  4. Step 4: Simplify right side
    20,436.18x = 323,852,593.04
  5. Step 5: Solve for x
    x = 323,852,593.04/20,436.18
  6. Step 6: Final answer
    x = 15,847.02

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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.