Home / 12,521,696.96-18,740,694.18-7,128,899.66

Finding the Fourth Proportional to 12,521,696.96, 18,740,694.18 and 7,128,899.66

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Solution

The fourth proportional to 12,521,696.96, 18,740,694.18 and 7,128,899.66 is: 10,669,522.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521,696.96 : 18,740,694.18 = 7,128,899.66 : x
  2. Step 2: Convert to fraction form
    12,521,696.96/18,740,694.18 = 7,128,899.66/x
  3. Step 3: Cross multiply
    12,521,696.96x = 18,740,694.18 × 7,128,899.66
  4. Step 4: Simplify right side
    12,521,696.96x = 133,600,528,367,965.98
  5. Step 5: Solve for x
    x = 133,600,528,367,965.98/12,521,696.96
  6. Step 6: Final answer
    x = 10,669,522.57

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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.