Home / 21,405,233-29,539,221.54-12,820,529

Finding the Fourth Proportional to 21,405,233, 29,539,221.54 and 12,820,529

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Solution

The fourth proportional to 21,405,233, 29,539,221.54 and 12,820,529 is: 17,692,330.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405,233 : 29,539,221.54 = 12,820,529 : x
  2. Step 2: Convert to fraction form
    21,405,233/29,539,221.54 = 12,820,529/x
  3. Step 3: Cross multiply
    21,405,233x = 29,539,221.54 × 12,820,529
  4. Step 4: Simplify right side
    21,405,233x = 378,708,446,390,994.62
  5. Step 5: Solve for x
    x = 378,708,446,390,994.62/21,405,233
  6. Step 6: Final answer
    x = 17,692,330.02

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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.