Home / 21,679,100.28-29,917,707.66-11,889,934.20

Finding the Fourth Proportional to 21,679,100.28, 29,917,707.66 and 11,889,934.20

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Solution

The fourth proportional to 21,679,100.28, 29,917,707.66 and 11,889,934.20 is: 16,408,410.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,679,100.28 : 29,917,707.66 = 11,889,934.20 : x
  2. Step 2: Convert to fraction form
    21,679,100.28/29,917,707.66 = 11,889,934.20/x
  3. Step 3: Cross multiply
    21,679,100.28x = 29,917,707.66 × 11,889,934.20
  4. Step 4: Simplify right side
    21,679,100.28x = 355,719,575,492,235.94
  5. Step 5: Solve for x
    x = 355,719,575,492,235.94/21,679,100.28
  6. Step 6: Final answer
    x = 16,408,410.45

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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.