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Finding the Fourth Proportional to 13,891,973.20, 20,797,409.40 and 9,910,661.20

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Solution

The fourth proportional to 13,891,973.20, 20,797,409.40 and 9,910,661.20 is: 14,837,062.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891,973.20 : 20,797,409.40 = 9,910,661.20 : x
  2. Step 2: Convert to fraction form
    13,891,973.20/20,797,409.40 = 9,910,661.20/x
  3. Step 3: Cross multiply
    13,891,973.20x = 20,797,409.40 × 9,910,661.20
  4. Step 4: Simplify right side
    13,891,973.20x = 206,116,078,401,095.25
  5. Step 5: Solve for x
    x = 206,116,078,401,095.25/13,891,973.20
  6. Step 6: Final answer
    x = 14,837,062.77

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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.