Home / 21,476,705.76-29,638,476-11,687,781.60

Finding the Fourth Proportional to 21,476,705.76, 29,638,476 and 11,687,781.60

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Solution

The fourth proportional to 21,476,705.76, 29,638,476 and 11,687,781.60 is: 16,129,477.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,476,705.76 : 29,638,476 = 11,687,781.60 : x
  2. Step 2: Convert to fraction form
    21,476,705.76/29,638,476 = 11,687,781.60/x
  3. Step 3: Cross multiply
    21,476,705.76x = 29,638,476 × 11,687,781.60
  4. Step 4: Simplify right side
    21,476,705.76x = 346,408,034,444,841.56
  5. Step 5: Solve for x
    x = 346,408,034,444,841.56/21,476,705.76
  6. Step 6: Final answer
    x = 16,129,477.13

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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.