Home / 21,129,231.24-31,704,656.11-10,062,831.42

Finding the Fourth Proportional to 21,129,231.24, 31,704,656.11 and 10,062,831.42

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Solution

The fourth proportional to 21,129,231.24, 31,704,656.11 and 10,062,831.42 is: 15,099,395.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,129,231.24 : 31,704,656.11 = 10,062,831.42 : x
  2. Step 2: Convert to fraction form
    21,129,231.24/31,704,656.11 = 10,062,831.42/x
  3. Step 3: Cross multiply
    21,129,231.24x = 31,704,656.11 × 10,062,831.42
  4. Step 4: Simplify right side
    21,129,231.24x = 319,038,609,638,845.94
  5. Step 5: Solve for x
    x = 319,038,609,638,845.94/21,129,231.24
  6. Step 6: Final answer
    x = 15,099,395.05

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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.