Home / 15,148,839.42-20,905,421.79-8,622,468.81

Finding the Fourth Proportional to 15,148,839.42, 20,905,421.79 and 8,622,468.81

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Solution

The fourth proportional to 15,148,839.42, 20,905,421.79 and 8,622,468.81 is: 11,899,020.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,148,839.42 : 20,905,421.79 = 8,622,468.81 : x
  2. Step 2: Convert to fraction form
    15,148,839.42/20,905,421.79 = 8,622,468.81/x
  3. Step 3: Cross multiply
    15,148,839.42x = 20,905,421.79 × 8,622,468.81
  4. Step 4: Simplify right side
    15,148,839.42x = 180,256,347,259,571.53
  5. Step 5: Solve for x
    x = 180,256,347,259,571.53/15,148,839.42
  6. Step 6: Final answer
    x = 11,899,020.27

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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.