Home / 13,721,545.20-18,936,895.32-7,611,942

Finding the Fourth Proportional to 13,721,545.20, 18,936,895.32 and 7,611,942

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Solution

The fourth proportional to 13,721,545.20, 18,936,895.32 and 7,611,942 is: 10,505,125.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721,545.20 : 18,936,895.32 = 7,611,942 : x
  2. Step 2: Convert to fraction form
    13,721,545.20/18,936,895.32 = 7,611,942/x
  3. Step 3: Cross multiply
    13,721,545.20x = 18,936,895.32 × 7,611,942
  4. Step 4: Simplify right side
    13,721,545.20x = 144,146,548,835,911.44
  5. Step 5: Solve for x
    x = 144,146,548,835,911.44/13,721,545.20
  6. Step 6: Final answer
    x = 10,505,125.10

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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.