Home / 20,386,650.97-28,133,570.19-11,219,293.72

Finding the Fourth Proportional to 20,386,650.97, 28,133,570.19 and 11,219,293.72

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Solution

The fourth proportional to 20,386,650.97, 28,133,570.19 and 11,219,293.72 is: 15,482,620.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,650.97 : 28,133,570.19 = 11,219,293.72 : x
  2. Step 2: Convert to fraction form
    20,386,650.97/28,133,570.19 = 11,219,293.72/x
  3. Step 3: Cross multiply
    20,386,650.97x = 28,133,570.19 × 11,219,293.72
  4. Step 4: Simplify right side
    20,386,650.97x = 315,638,787,353,846.25
  5. Step 5: Solve for x
    x = 315,638,787,353,846.25/20,386,650.97
  6. Step 6: Final answer
    x = 15,482,620.85

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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.