Home / 21,309,355.18-29,399,714.40-12,135,502.54

Finding the Fourth Proportional to 21,309,355.18, 29,399,714.40 and 12,135,502.54

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Solution

The fourth proportional to 21,309,355.18, 29,399,714.40 and 12,135,502.54 is: 16,742,895.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309,355.18 : 29,399,714.40 = 12,135,502.54 : x
  2. Step 2: Convert to fraction form
    21,309,355.18/29,399,714.40 = 12,135,502.54/x
  3. Step 3: Cross multiply
    21,309,355.18x = 29,399,714.40 × 12,135,502.54
  4. Step 4: Simplify right side
    21,309,355.18x = 356,780,308,776,474.56
  5. Step 5: Solve for x
    x = 356,780,308,776,474.56/21,309,355.18
  6. Step 6: Final answer
    x = 16,742,895.59

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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.