Home / 20,429,292.70-28,192,190.50-11,136,657.72

Finding the Fourth Proportional to 20,429,292.70, 28,192,190.50 and 11,136,657.72

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Solution

The fourth proportional to 20,429,292.70, 28,192,190.50 and 11,136,657.72 is: 15,368,460.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429,292.70 : 28,192,190.50 = 11,136,657.72 : x
  2. Step 2: Convert to fraction form
    20,429,292.70/28,192,190.50 = 11,136,657.72/x
  3. Step 3: Cross multiply
    20,429,292.70x = 28,192,190.50 × 11,136,657.72
  4. Step 4: Simplify right side
    20,429,292.70x = 313,966,775,975,535.69
  5. Step 5: Solve for x
    x = 313,966,775,975,535.69/20,429,292.70
  6. Step 6: Final answer
    x = 15,368,460.41

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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.