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Finding the Fourth Proportional to 19,668,701.70, 29,503,052.55 and 18,157,047.30

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Solution

The fourth proportional to 19,668,701.70, 29,503,052.55 and 18,157,047.30 is: 27,235,570.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,668,701.70 : 29,503,052.55 = 18,157,047.30 : x
  2. Step 2: Convert to fraction form
    19,668,701.70/29,503,052.55 = 18,157,047.30/x
  3. Step 3: Cross multiply
    19,668,701.70x = 29,503,052.55 × 18,157,047.30
  4. Step 4: Simplify right side
    19,668,701.70x = 535,688,320,644,735.62
  5. Step 5: Solve for x
    x = 535,688,320,644,735.62/19,668,701.70
  6. Step 6: Final answer
    x = 27,235,570.95

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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.