Home / 11,399.39-15,737.73-8,689.32

Finding the Fourth Proportional to 11,399.39, 15,737.73 and 8,689.32

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Solution

The fourth proportional to 11,399.39, 15,737.73 and 8,689.32 is: 11,996.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,399.39 : 15,737.73 = 8,689.32 : x
  2. Step 2: Convert to fraction form
    11,399.39/15,737.73 = 8,689.32/x
  3. Step 3: Cross multiply
    11,399.39x = 15,737.73 × 8,689.32
  4. Step 4: Simplify right side
    11,399.39x = 136,750,172.04
  5. Step 5: Solve for x
    x = 136,750,172.04/11,399.39
  6. Step 6: Final answer
    x = 11,996.28

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1.5x scale

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.