Home / 20,860.32-28,800.54-18,618.24

Finding the Fourth Proportional to 20,860.32, 28,800.54 and 18,618.24

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Solution

The fourth proportional to 20,860.32, 28,800.54 and 18,618.24 is: 25,705.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860.32 : 28,800.54 = 18,618.24 : x
  2. Step 2: Convert to fraction form
    20,860.32/28,800.54 = 18,618.24/x
  3. Step 3: Cross multiply
    20,860.32x = 28,800.54 × 18,618.24
  4. Step 4: Simplify right side
    20,860.32x = 536,215,365.85
  5. Step 5: Solve for x
    x = 536,215,365.85/20,860.32
  6. Step 6: Final answer
    x = 25,705.04

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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.