Home / 20,490,509.88-30,680,685.36-15,609,563.28

Finding the Fourth Proportional to 20,490,509.88, 30,680,685.36 and 15,609,563.28

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Solution

The fourth proportional to 20,490,509.88, 30,680,685.36 and 15,609,563.28 is: 23,372,385.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490,509.88 : 30,680,685.36 = 15,609,563.28 : x
  2. Step 2: Convert to fraction form
    20,490,509.88/30,680,685.36 = 15,609,563.28/x
  3. Step 3: Cross multiply
    20,490,509.88x = 30,680,685.36 × 15,609,563.28
  4. Step 4: Simplify right side
    20,490,509.88x = 478,912,099,600,689.56
  5. Step 5: Solve for x
    x = 478,912,099,600,689.56/20,490,509.88
  6. Step 6: Final answer
    x = 23,372,385.68

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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.