Home / 13,578,662.58-18,738,909.50-7,384,071.58

Finding the Fourth Proportional to 13,578,662.58, 18,738,909.50 and 7,384,071.58

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Solution

The fourth proportional to 13,578,662.58, 18,738,909.50 and 7,384,071.58 is: 10,190,211.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578,662.58 : 18,738,909.50 = 7,384,071.58 : x
  2. Step 2: Convert to fraction form
    13,578,662.58/18,738,909.50 = 7,384,071.58/x
  3. Step 3: Cross multiply
    13,578,662.58x = 18,738,909.50 × 7,384,071.58
  4. Step 4: Simplify right side
    13,578,662.58x = 138,369,449,079,142.02
  5. Step 5: Solve for x
    x = 138,369,449,079,142.02/13,578,662.58
  6. Step 6: Final answer
    x = 10,190,211.91

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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.