Home / 20,807,579.10-31,211,368.65-18,792,039.90

Finding the Fourth Proportional to 20,807,579.10, 31,211,368.65 and 18,792,039.90

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Solution

The fourth proportional to 20,807,579.10, 31,211,368.65 and 18,792,039.90 is: 28,188,059.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807,579.10 : 31,211,368.65 = 18,792,039.90 : x
  2. Step 2: Convert to fraction form
    20,807,579.10/31,211,368.65 = 18,792,039.90/x
  3. Step 3: Cross multiply
    20,807,579.10x = 31,211,368.65 × 18,792,039.90
  4. Step 4: Simplify right side
    20,807,579.10x = 586,525,285,004,409
  5. Step 5: Solve for x
    x = 586,525,285,004,409/20,807,579.10
  6. Step 6: Final answer
    x = 28,188,059.85

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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.