Home / 20,872,693-28,805,678.76-12,052,516.60

Finding the Fourth Proportional to 20,872,693, 28,805,678.76 and 12,052,516.60

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Solution

The fourth proportional to 20,872,693, 28,805,678.76 and 12,052,516.60 is: 16,633,259.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872,693 : 28,805,678.76 = 12,052,516.60 : x
  2. Step 2: Convert to fraction form
    20,872,693/28,805,678.76 = 12,052,516.60/x
  3. Step 3: Cross multiply
    20,872,693x = 28,805,678.76 × 12,052,516.60
  4. Step 4: Simplify right side
    20,872,693x = 347,180,921,429,167.44
  5. Step 5: Solve for x
    x = 347,180,921,429,167.44/20,872,693
  6. Step 6: Final answer
    x = 16,633,259.61

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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.