Home / 12,478,509.40-18,717,764.10-8,825,344.60

Finding the Fourth Proportional to 12,478,509.40, 18,717,764.10 and 8,825,344.60

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Solution

The fourth proportional to 12,478,509.40, 18,717,764.10 and 8,825,344.60 is: 13,238,016.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,509.40 : 18,717,764.10 = 8,825,344.60 : x
  2. Step 2: Convert to fraction form
    12,478,509.40/18,717,764.10 = 8,825,344.60/x
  3. Step 3: Cross multiply
    12,478,509.40x = 18,717,764.10 × 8,825,344.60
  4. Step 4: Simplify right side
    12,478,509.40x = 165,190,718,324,008.88
  5. Step 5: Solve for x
    x = 165,190,718,324,008.88/12,478,509.40
  6. Step 6: Final answer
    x = 13,238,016.90

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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.