Home / 20,848.15-28,815.45-18,441.10

Finding the Fourth Proportional to 20,848.15, 28,815.45 and 18,441.10

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Solution

The fourth proportional to 20,848.15, 28,815.45 and 18,441.10 is: 25,488.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.15 : 28,815.45 = 18,441.10 : x
  2. Step 2: Convert to fraction form
    20,848.15/28,815.45 = 18,441.10/x
  3. Step 3: Cross multiply
    20,848.15x = 28,815.45 × 18,441.10
  4. Step 4: Simplify right side
    20,848.15x = 531,388,561.86
  5. Step 5: Solve for x
    x = 531,388,561.86/20,848.15
  6. Step 6: Final answer
    x = 25,488.52

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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.