Home / 20,530,129.23-28,329,658.61-12,268,552.05

Finding the Fourth Proportional to 20,530,129.23, 28,329,658.61 and 12,268,552.05

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Solution

The fourth proportional to 20,530,129.23, 28,329,658.61 and 12,268,552.05 is: 16,929,454.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530,129.23 : 28,329,658.61 = 12,268,552.05 : x
  2. Step 2: Convert to fraction form
    20,530,129.23/28,329,658.61 = 12,268,552.05/x
  3. Step 3: Cross multiply
    20,530,129.23x = 28,329,658.61 × 12,268,552.05
  4. Step 4: Simplify right side
    20,530,129.23x = 347,563,891,154,172.94
  5. Step 5: Solve for x
    x = 347,563,891,154,172.94/20,530,129.23
  6. Step 6: Final answer
    x = 16,929,454.62

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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.