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Finding the Fourth Proportional to 18,162,906.19, 25,065,006.02 and 9,902,900.95

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Solution

The fourth proportional to 18,162,906.19, 25,065,006.02 and 9,902,900.95 is: 13,666,109.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,162,906.19 : 25,065,006.02 = 9,902,900.95 : x
  2. Step 2: Convert to fraction form
    18,162,906.19/25,065,006.02 = 9,902,900.95/x
  3. Step 3: Cross multiply
    18,162,906.19x = 25,065,006.02 × 9,902,900.95
  4. Step 4: Simplify right side
    18,162,906.19x = 248,216,271,927,213.69
  5. Step 5: Solve for x
    x = 248,216,271,927,213.69/18,162,906.19
  6. Step 6: Final answer
    x = 13,666,109.89

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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.