Home / 21,405,234-29,539,222.92-12,820,530

Finding the Fourth Proportional to 21,405,234, 29,539,222.92 and 12,820,530

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Solution

The fourth proportional to 21,405,234, 29,539,222.92 and 12,820,530 is: 17,692,331.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405,234 : 29,539,222.92 = 12,820,530 : x
  2. Step 2: Convert to fraction form
    21,405,234/29,539,222.92 = 12,820,530/x
  3. Step 3: Cross multiply
    21,405,234x = 29,539,222.92 × 12,820,530
  4. Step 4: Simplify right side
    21,405,234x = 378,708,493,622,547.62
  5. Step 5: Solve for x
    x = 378,708,493,622,547.62/21,405,234
  6. Step 6: Final answer
    x = 17,692,331.40

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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.