Home / 20,912,945.52-28,847,844.84-13,058,823.62

Finding the Fourth Proportional to 20,912,945.52, 28,847,844.84 and 13,058,823.62

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Solution

The fourth proportional to 20,912,945.52, 28,847,844.84 and 13,058,823.62 is: 18,013,670.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912,945.52 : 28,847,844.84 = 13,058,823.62 : x
  2. Step 2: Convert to fraction form
    20,912,945.52/28,847,844.84 = 13,058,823.62/x
  3. Step 3: Cross multiply
    20,912,945.52x = 28,847,844.84 × 13,058,823.62
  4. Step 4: Simplify right side
    20,912,945.52x = 376,718,917,429,679
  5. Step 5: Solve for x
    x = 376,718,917,429,679/20,912,945.52
  6. Step 6: Final answer
    x = 18,013,670.86

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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.