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Finding the Fourth Proportional to 15,990,955.50, 22,068,045.09 and 8,747,611.50

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Solution

The fourth proportional to 15,990,955.50, 22,068,045.09 and 8,747,611.50 is: 12,071,991.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,990,955.50 : 22,068,045.09 = 8,747,611.50 : x
  2. Step 2: Convert to fraction form
    15,990,955.50/22,068,045.09 = 8,747,611.50/x
  3. Step 3: Cross multiply
    15,990,955.50x = 22,068,045.09 × 8,747,611.50
  4. Step 4: Simplify right side
    15,990,955.50x = 193,042,685,011,802.53
  5. Step 5: Solve for x
    x = 193,042,685,011,802.53/15,990,955.50
  6. Step 6: Final answer
    x = 12,071,991.88

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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.