Home / 13,720,724.20-18,935,763.30-7,611,121

Finding the Fourth Proportional to 13,720,724.20, 18,935,763.30 and 7,611,121

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Solution

The fourth proportional to 13,720,724.20, 18,935,763.30 and 7,611,121 is: 10,503,992.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720,724.20 : 18,935,763.30 = 7,611,121 : x
  2. Step 2: Convert to fraction form
    13,720,724.20/18,935,763.30 = 7,611,121/x
  3. Step 3: Cross multiply
    13,720,724.20x = 18,935,763.30 × 7,611,121
  4. Step 4: Simplify right side
    13,720,724.20x = 144,122,385,703,659.31
  5. Step 5: Solve for x
    x = 144,122,385,703,659.31/13,720,724.20
  6. Step 6: Final answer
    x = 10,503,992.62

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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.