Home / 12,381,729.36-18,489,215.28-10,111,756.86

Finding the Fourth Proportional to 12,381,729.36, 18,489,215.28 and 10,111,756.86

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Solution

The fourth proportional to 12,381,729.36, 18,489,215.28 and 10,111,756.86 is: 15,099,542.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,381,729.36 : 18,489,215.28 = 10,111,756.86 : x
  2. Step 2: Convert to fraction form
    12,381,729.36/18,489,215.28 = 10,111,756.86/x
  3. Step 3: Cross multiply
    12,381,729.36x = 18,489,215.28 × 10,111,756.86
  4. Step 4: Simplify right side
    12,381,729.36x = 186,958,449,443,556.81
  5. Step 5: Solve for x
    x = 186,958,449,443,556.81/12,381,729.36
  6. Step 6: Final answer
    x = 15,099,542.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.