Home / 13,288,719.90-19,932,043.05-5,200,124.70

Finding the Fourth Proportional to 13,288,719.90, 19,932,043.05 and 5,200,124.70

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Solution

The fourth proportional to 13,288,719.90, 19,932,043.05 and 5,200,124.70 is: 7,799,781.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288,719.90 : 19,932,043.05 = 5,200,124.70 : x
  2. Step 2: Convert to fraction form
    13,288,719.90/19,932,043.05 = 5,200,124.70/x
  3. Step 3: Cross multiply
    13,288,719.90x = 19,932,043.05 × 5,200,124.70
  4. Step 4: Simplify right side
    13,288,719.90x = 103,649,109,385,768.34
  5. Step 5: Solve for x
    x = 103,649,109,385,768.34/13,288,719.90
  6. Step 6: Final answer
    x = 7,799,781.33

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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.