Home / 20,309,140.11-30,478,255.22-8,645,688.82

Finding the Fourth Proportional to 20,309,140.11, 30,478,255.22 and 8,645,688.82

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Solution

The fourth proportional to 20,309,140.11, 30,478,255.22 and 8,645,688.82 is: 12,974,725.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309,140.11 : 30,478,255.22 = 8,645,688.82 : x
  2. Step 2: Convert to fraction form
    20,309,140.11/30,478,255.22 = 8,645,688.82/x
  3. Step 3: Cross multiply
    20,309,140.11x = 30,478,255.22 × 8,645,688.82
  4. Step 4: Simplify right side
    20,309,140.11x = 263,505,510,350,639.06
  5. Step 5: Solve for x
    x = 263,505,510,350,639.06/20,309,140.11
  6. Step 6: Final answer
    x = 12,974,725.12

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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.