Home / 20,723,332-28,598,198.16-12,138,628

Finding the Fourth Proportional to 20,723,332, 28,598,198.16 and 12,138,628

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Solution

The fourth proportional to 20,723,332, 28,598,198.16 and 12,138,628 is: 16,751,306.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723,332 : 28,598,198.16 = 12,138,628 : x
  2. Step 2: Convert to fraction form
    20,723,332/28,598,198.16 = 12,138,628/x
  3. Step 3: Cross multiply
    20,723,332x = 28,598,198.16 × 12,138,628
  4. Step 4: Simplify right side
    20,723,332x = 347,142,888,934,524.50
  5. Step 5: Solve for x
    x = 347,142,888,934,524.50/20,723,332
  6. Step 6: Final answer
    x = 16,751,306.64

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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.