Home / 20,579,121.12-30,880,639.20-9,219,569.82

Finding the Fourth Proportional to 20,579,121.12, 30,880,639.20 and 9,219,569.82

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Solution

The fourth proportional to 20,579,121.12, 30,880,639.20 and 9,219,569.82 is: 13,834,711.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579,121.12 : 30,880,639.20 = 9,219,569.82 : x
  2. Step 2: Convert to fraction form
    20,579,121.12/30,880,639.20 = 9,219,569.82/x
  3. Step 3: Cross multiply
    20,579,121.12x = 30,880,639.20 × 9,219,569.82
  4. Step 4: Simplify right side
    20,579,121.12x = 284,706,209,190,628.94
  5. Step 5: Solve for x
    x = 284,706,209,190,628.94/20,579,121.12
  6. Step 6: Final answer
    x = 13,834,711.77

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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.