Home / 20,311,399.72-28,029,225.28-11,370,384.80

Finding the Fourth Proportional to 20,311,399.72, 28,029,225.28 and 11,370,384.80

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Solution

The fourth proportional to 20,311,399.72, 28,029,225.28 and 11,370,384.80 is: 15,690,847.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,311,399.72 : 28,029,225.28 = 11,370,384.80 : x
  2. Step 2: Convert to fraction form
    20,311,399.72/28,029,225.28 = 11,370,384.80/x
  3. Step 3: Cross multiply
    20,311,399.72x = 28,029,225.28 × 11,370,384.80
  4. Step 4: Simplify right side
    20,311,399.72x = 318,703,077,079,487.75
  5. Step 5: Solve for x
    x = 318,703,077,079,487.75/20,311,399.72
  6. Step 6: Final answer
    x = 15,690,847.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.