Home / 20,455,783.92-28,228,953.24-11,288,425.20

Finding the Fourth Proportional to 20,455,783.92, 28,228,953.24 and 11,288,425.20

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Solution

The fourth proportional to 20,455,783.92, 28,228,953.24 and 11,288,425.20 is: 15,578,011.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455,783.92 : 28,228,953.24 = 11,288,425.20 : x
  2. Step 2: Convert to fraction form
    20,455,783.92/28,228,953.24 = 11,288,425.20/x
  3. Step 3: Cross multiply
    20,455,783.92x = 28,228,953.24 × 11,288,425.20
  4. Step 4: Simplify right side
    20,455,783.92x = 318,660,427,124,037.62
  5. Step 5: Solve for x
    x = 318,660,427,124,037.62/20,455,783.92
  6. Step 6: Final answer
    x = 15,578,011.01

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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.