Home / 20,390,548.82-28,124,631.20-13,419,005.18

Finding the Fourth Proportional to 20,390,548.82, 28,124,631.20 and 13,419,005.18

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Solution

The fourth proportional to 20,390,548.82, 28,124,631.20 and 13,419,005.18 is: 18,508,799.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390,548.82 : 28,124,631.20 = 13,419,005.18 : x
  2. Step 2: Convert to fraction form
    20,390,548.82/28,124,631.20 = 13,419,005.18/x
  3. Step 3: Cross multiply
    20,390,548.82x = 28,124,631.20 × 13,419,005.18
  4. Step 4: Simplify right side
    20,390,548.82x = 377,404,571,651,314
  5. Step 5: Solve for x
    x = 377,404,571,651,314/20,390,548.82
  6. Step 6: Final answer
    x = 18,508,799.10

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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.