Home / 12,578,487.60-18,858,400.20-5,384,132.40

Finding the Fourth Proportional to 12,578,487.60, 18,858,400.20 and 5,384,132.40

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Solution

The fourth proportional to 12,578,487.60, 18,858,400.20 and 5,384,132.40 is: 8,072,204.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578,487.60 : 18,858,400.20 = 5,384,132.40 : x
  2. Step 2: Convert to fraction form
    12,578,487.60/18,858,400.20 = 5,384,132.40/x
  3. Step 3: Cross multiply
    12,578,487.60x = 18,858,400.20 × 5,384,132.40
  4. Step 4: Simplify right side
    12,578,487.60x = 101,536,123,528,986.48
  5. Step 5: Solve for x
    x = 101,536,123,528,986.48/12,578,487.60
  6. Step 6: Final answer
    x = 8,072,204.45

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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.