Home / 20,856,790.55-28,785,337.07-11,566,426.86

Finding the Fourth Proportional to 20,856,790.55, 28,785,337.07 and 11,566,426.86

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Solution

The fourth proportional to 20,856,790.55, 28,785,337.07 and 11,566,426.86 is: 15,963,313.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,856,790.55 : 28,785,337.07 = 11,566,426.86 : x
  2. Step 2: Convert to fraction form
    20,856,790.55/28,785,337.07 = 11,566,426.86/x
  3. Step 3: Cross multiply
    20,856,790.55x = 28,785,337.07 × 11,566,426.86
  4. Step 4: Simplify right side
    20,856,790.55x = 332,943,495,860,601.69
  5. Step 5: Solve for x
    x = 332,943,495,860,601.69/20,856,790.55
  6. Step 6: Final answer
    x = 15,963,313.97

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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.