Home / 15,688.08-21,649.96-8,518

Finding the Fourth Proportional to 15,688.08, 21,649.96 and 8,518

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Solution

The fourth proportional to 15,688.08, 21,649.96 and 8,518 is: 11,755.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,688.08 : 21,649.96 = 8,518 : x
  2. Step 2: Convert to fraction form
    15,688.08/21,649.96 = 8,518/x
  3. Step 3: Cross multiply
    15,688.08x = 21,649.96 × 8,518
  4. Step 4: Simplify right side
    15,688.08x = 184,414,359.28
  5. Step 5: Solve for x
    x = 184,414,359.28/15,688.08
  6. Step 6: Final answer
    x = 11,755.06

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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.