Home / 20,663,121.60-30,994,682.40-7,884,043.20

Finding the Fourth Proportional to 20,663,121.60, 30,994,682.40 and 7,884,043.20

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Solution

The fourth proportional to 20,663,121.60, 30,994,682.40 and 7,884,043.20 is: 11,826,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663,121.60 : 30,994,682.40 = 7,884,043.20 : x
  2. Step 2: Convert to fraction form
    20,663,121.60/30,994,682.40 = 7,884,043.20/x
  3. Step 3: Cross multiply
    20,663,121.60x = 30,994,682.40 × 7,884,043.20
  4. Step 4: Simplify right side
    20,663,121.60x = 244,363,415,011,879.69
  5. Step 5: Solve for x
    x = 244,363,415,011,879.69/20,663,121.60
  6. Step 6: Final answer
    x = 11,826,064.80

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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.