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Finding the Fourth Proportional to 18,443,347.40, 27,681,751.65 and 9,351,769.70

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Solution

The fourth proportional to 18,443,347.40, 27,681,751.65 and 9,351,769.70 is: 14,036,137.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,443,347.40 : 27,681,751.65 = 9,351,769.70 : x
  2. Step 2: Convert to fraction form
    18,443,347.40/27,681,751.65 = 9,351,769.70/x
  3. Step 3: Cross multiply
    18,443,347.40x = 27,681,751.65 × 9,351,769.70
  4. Step 4: Simplify right side
    18,443,347.40x = 258,873,366,323,394.97
  5. Step 5: Solve for x
    x = 258,873,366,323,394.97/18,443,347.40
  6. Step 6: Final answer
    x = 14,036,137.84

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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.