Home / 21,121,342.11-29,144,122.71-12,302,244.78

Finding the Fourth Proportional to 21,121,342.11, 29,144,122.71 and 12,302,244.78

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Solution

The fourth proportional to 21,121,342.11, 29,144,122.71 and 12,302,244.78 is: 16,975,158.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,121,342.11 : 29,144,122.71 = 12,302,244.78 : x
  2. Step 2: Convert to fraction form
    21,121,342.11/29,144,122.71 = 12,302,244.78/x
  3. Step 3: Cross multiply
    21,121,342.11x = 29,144,122.71 × 12,302,244.78
  4. Step 4: Simplify right side
    21,121,342.11x = 358,538,131,476,776.94
  5. Step 5: Solve for x
    x = 358,538,131,476,776.94/21,121,342.11
  6. Step 6: Final answer
    x = 16,975,158.57

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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.