Home / 12,310,380.45-16,990,434.57-7,156,731.36

Finding the Fourth Proportional to 12,310,380.45, 16,990,434.57 and 7,156,731.36

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Solution

The fourth proportional to 12,310,380.45, 16,990,434.57 and 7,156,731.36 is: 9,877,515.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,310,380.45 : 16,990,434.57 = 7,156,731.36 : x
  2. Step 2: Convert to fraction form
    12,310,380.45/16,990,434.57 = 7,156,731.36/x
  3. Step 3: Cross multiply
    12,310,380.45x = 16,990,434.57 × 7,156,731.36
  4. Step 4: Simplify right side
    12,310,380.45x = 121,595,975,907,147.12
  5. Step 5: Solve for x
    x = 121,595,975,907,147.12/12,310,380.45
  6. Step 6: Final answer
    x = 9,877,515.68

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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.