Home / 20,415,042.90-30,622,564.35-13,187,445.30

Finding the Fourth Proportional to 20,415,042.90, 30,622,564.35 and 13,187,445.30

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Solution

The fourth proportional to 20,415,042.90, 30,622,564.35 and 13,187,445.30 is: 19,781,167.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415,042.90 : 30,622,564.35 = 13,187,445.30 : x
  2. Step 2: Convert to fraction form
    20,415,042.90/30,622,564.35 = 13,187,445.30/x
  3. Step 3: Cross multiply
    20,415,042.90x = 30,622,564.35 × 13,187,445.30
  4. Step 4: Simplify right side
    20,415,042.90x = 403,833,392,311,355.12
  5. Step 5: Solve for x
    x = 403,833,392,311,355.12/20,415,042.90
  6. Step 6: Final answer
    x = 19,781,167.95

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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.