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Finding the Fourth Proportional to 15,673,406.80, 23,481,079.80 and 8,921,765.20

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Solution

The fourth proportional to 15,673,406.80, 23,481,079.80 and 8,921,765.20 is: 13,366,122.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,673,406.80 : 23,481,079.80 = 8,921,765.20 : x
  2. Step 2: Convert to fraction form
    15,673,406.80/23,481,079.80 = 8,921,765.20/x
  3. Step 3: Cross multiply
    15,673,406.80x = 23,481,079.80 × 8,921,765.20
  4. Step 4: Simplify right side
    15,673,406.80x = 209,492,680,618,062.94
  5. Step 5: Solve for x
    x = 209,492,680,618,062.94/15,673,406.80
  6. Step 6: Final answer
    x = 13,366,122.84

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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.