Home / 12,979,200.80-17,909,307.51-7,471,511.43

Finding the Fourth Proportional to 12,979,200.80, 17,909,307.51 and 7,471,511.43

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Solution

The fourth proportional to 12,979,200.80, 17,909,307.51 and 7,471,511.43 is: 10,309,540.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979,200.80 : 17,909,307.51 = 7,471,511.43 : x
  2. Step 2: Convert to fraction form
    12,979,200.80/17,909,307.51 = 7,471,511.43/x
  3. Step 3: Cross multiply
    12,979,200.80x = 17,909,307.51 × 7,471,511.43
  4. Step 4: Simplify right side
    12,979,200.80x = 133,809,595,811,938.88
  5. Step 5: Solve for x
    x = 133,809,595,811,938.88/12,979,200.80
  6. Step 6: Final answer
    x = 10,309,540.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.