Home / 20,139,125.32-30,218,135.82-10,042,533.64

Finding the Fourth Proportional to 20,139,125.32, 30,218,135.82 and 10,042,533.64

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Solution

The fourth proportional to 20,139,125.32, 30,218,135.82 and 10,042,533.64 is: 15,068,511.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139,125.32 : 30,218,135.82 = 10,042,533.64 : x
  2. Step 2: Convert to fraction form
    20,139,125.32/30,218,135.82 = 10,042,533.64/x
  3. Step 3: Cross multiply
    20,139,125.32x = 30,218,135.82 × 10,042,533.64
  4. Step 4: Simplify right side
    20,139,125.32x = 303,466,645,510,439
  5. Step 5: Solve for x
    x = 303,466,645,510,439/20,139,125.32
  6. Step 6: Final answer
    x = 15,068,511.70

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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.