Home / 21,359,314.35-29,475,161.90-11,939,854.78

Finding the Fourth Proportional to 21,359,314.35, 29,475,161.90 and 11,939,854.78

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Solution

The fourth proportional to 21,359,314.35, 29,475,161.90 and 11,939,854.78 is: 16,476,612.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,359,314.35 : 29,475,161.90 = 11,939,854.78 : x
  2. Step 2: Convert to fraction form
    21,359,314.35/29,475,161.90 = 11,939,854.78/x
  3. Step 3: Cross multiply
    21,359,314.35x = 29,475,161.90 × 11,939,854.78
  4. Step 4: Simplify right side
    21,359,314.35x = 351,929,152,702,988.88
  5. Step 5: Solve for x
    x = 351,929,152,702,988.88/21,359,314.35
  6. Step 6: Final answer
    x = 16,476,612.82

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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.