Home / 28,508,563,078.07-39,341,856,006.61-15,472,745,940.86

Finding the Fourth Proportional to 28,508,563,078.07, 39,341,856,006.61 and 15,472,745,940.86

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Solution

The fourth proportional to 28,508,563,078.07, 39,341,856,006.61 and 15,472,745,940.86 is: 21,352,410,542.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508,563,078.07 : 39,341,856,006.61 = 15,472,745,940.86 : x
  2. Step 2: Convert to fraction form
    28,508,563,078.07/39,341,856,006.61 = 15,472,745,940.86/x
  3. Step 3: Cross multiply
    28,508,563,078.07x = 39,341,856,006.61 × 15,472,745,940.86
  4. Step 4: Simplify right side
    28,508,563,078.07x = 608,726,542,831,930,441,728
  5. Step 5: Solve for x
    x = 608,726,542,831,930,441,728/28,508,563,078.07
  6. Step 6: Final answer
    x = 21,352,410,542.93

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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.