Home / 20,280,885.76-30,400,858.32-12,713,165.92

Finding the Fourth Proportional to 20,280,885.76, 30,400,858.32 and 12,713,165.92

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Solution

The fourth proportional to 20,280,885.76, 30,400,858.32 and 12,713,165.92 is: 19,056,916.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,280,885.76 : 30,400,858.32 = 12,713,165.92 : x
  2. Step 2: Convert to fraction form
    20,280,885.76/30,400,858.32 = 12,713,165.92/x
  3. Step 3: Cross multiply
    20,280,885.76x = 30,400,858.32 × 12,713,165.92
  4. Step 4: Simplify right side
    20,280,885.76x = 386,491,155,932,572.44
  5. Step 5: Solve for x
    x = 386,491,155,932,572.44/20,280,885.76
  6. Step 6: Final answer
    x = 19,056,916.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.