Home / 15,375,812.88-21,215,101.56-9,179,653.68

Finding the Fourth Proportional to 15,375,812.88, 21,215,101.56 and 9,179,653.68

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Solution

The fourth proportional to 15,375,812.88, 21,215,101.56 and 9,179,653.68 is: 12,665,820.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,375,812.88 : 21,215,101.56 = 9,179,653.68 : x
  2. Step 2: Convert to fraction form
    15,375,812.88/21,215,101.56 = 9,179,653.68/x
  3. Step 3: Cross multiply
    15,375,812.88x = 21,215,101.56 × 9,179,653.68
  4. Step 4: Simplify right side
    15,375,812.88x = 194,747,285,106,827.72
  5. Step 5: Solve for x
    x = 194,747,285,106,827.72/15,375,812.88
  6. Step 6: Final answer
    x = 12,665,820.44

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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.