Home / 10,781.16-16,168.86-2,989.32

Finding the Fourth Proportional to 10,781.16, 16,168.86 and 2,989.32

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Solution

The fourth proportional to 10,781.16, 16,168.86 and 2,989.32 is: 4,483.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.16 : 16,168.86 = 2,989.32 : x
  2. Step 2: Convert to fraction form
    10,781.16/16,168.86 = 2,989.32/x
  3. Step 3: Cross multiply
    10,781.16x = 16,168.86 × 2,989.32
  4. Step 4: Simplify right side
    10,781.16x = 48,333,896.58
  5. Step 5: Solve for x
    x = 48,333,896.58/10,781.16
  6. Step 6: Final answer
    x = 4,483.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.