Home / 20,947,847.40-28,905,489.62-11,653,220.36

Finding the Fourth Proportional to 20,947,847.40, 28,905,489.62 and 11,653,220.36

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Solution

The fourth proportional to 20,947,847.40, 28,905,489.62 and 11,653,220.36 is: 16,080,031.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947,847.40 : 28,905,489.62 = 11,653,220.36 : x
  2. Step 2: Convert to fraction form
    20,947,847.40/28,905,489.62 = 11,653,220.36/x
  3. Step 3: Cross multiply
    20,947,847.40x = 28,905,489.62 × 11,653,220.36
  4. Step 4: Simplify right side
    20,947,847.40x = 336,842,040,155,552.69
  5. Step 5: Solve for x
    x = 336,842,040,155,552.69/20,947,847.40
  6. Step 6: Final answer
    x = 16,080,031.22

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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.