Home / 12,681,257.76-18,996,692.40-6,987,359.52

Finding the Fourth Proportional to 12,681,257.76, 18,996,692.40 and 6,987,359.52

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Solution

The fourth proportional to 12,681,257.76, 18,996,692.40 and 6,987,359.52 is: 10,467,157.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681,257.76 : 18,996,692.40 = 6,987,359.52 : x
  2. Step 2: Convert to fraction form
    12,681,257.76/18,996,692.40 = 6,987,359.52/x
  3. Step 3: Cross multiply
    12,681,257.76x = 18,996,692.40 × 6,987,359.52
  4. Step 4: Simplify right side
    12,681,257.76x = 132,736,719,489,651.62
  5. Step 5: Solve for x
    x = 132,736,719,489,651.62/12,681,257.76
  6. Step 6: Final answer
    x = 10,467,157.28

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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.