Home / 21,309,359.18-29,399,719.92-12,135,506.54

Finding the Fourth Proportional to 21,309,359.18, 29,399,719.92 and 12,135,506.54

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Solution

The fourth proportional to 21,309,359.18, 29,399,719.92 and 12,135,506.54 is: 16,742,901.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309,359.18 : 29,399,719.92 = 12,135,506.54 : x
  2. Step 2: Convert to fraction form
    21,309,359.18/29,399,719.92 = 12,135,506.54/x
  3. Step 3: Cross multiply
    21,309,359.18x = 29,399,719.92 × 12,135,506.54
  4. Step 4: Simplify right side
    21,309,359.18x = 356,780,493,363,328.25
  5. Step 5: Solve for x
    x = 356,780,493,363,328.25/21,309,359.18
  6. Step 6: Final answer
    x = 16,742,901.11

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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.