Home / 15,688.11-21,649.62-8,518.08

Finding the Fourth Proportional to 15,688.11, 21,649.62 and 8,518.08

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Solution

The fourth proportional to 15,688.11, 21,649.62 and 8,518.08 is: 11,754.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,688.11 : 21,649.62 = 8,518.08 : x
  2. Step 2: Convert to fraction form
    15,688.11/21,649.62 = 8,518.08/x
  3. Step 3: Cross multiply
    15,688.11x = 21,649.62 × 8,518.08
  4. Step 4: Simplify right side
    15,688.11x = 184,413,195.13
  5. Step 5: Solve for x
    x = 184,413,195.13/15,688.11
  6. Step 6: Final answer
    x = 11,754.97

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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.