Home / 21,158,135.70-31,737,203.55-13,599,863.70

Finding the Fourth Proportional to 21,158,135.70, 31,737,203.55 and 13,599,863.70

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Solution

The fourth proportional to 21,158,135.70, 31,737,203.55 and 13,599,863.70 is: 20,399,795.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158,135.70 : 31,737,203.55 = 13,599,863.70 : x
  2. Step 2: Convert to fraction form
    21,158,135.70/31,737,203.55 = 13,599,863.70/x
  3. Step 3: Cross multiply
    21,158,135.70x = 31,737,203.55 × 13,599,863.70
  4. Step 4: Simplify right side
    21,158,135.70x = 431,621,642,499,156.12
  5. Step 5: Solve for x
    x = 431,621,642,499,156.12/21,158,135.70
  6. Step 6: Final answer
    x = 20,399,795.55

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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.