Home / 11,565.12-17,345.28-6,639.36

Finding the Fourth Proportional to 11,565.12, 17,345.28 and 6,639.36

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Solution

The fourth proportional to 11,565.12, 17,345.28 and 6,639.36 is: 9,957.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,565.12 : 17,345.28 = 6,639.36 : x
  2. Step 2: Convert to fraction form
    11,565.12/17,345.28 = 6,639.36/x
  3. Step 3: Cross multiply
    11,565.12x = 17,345.28 × 6,639.36
  4. Step 4: Simplify right side
    11,565.12x = 115,161,558.22
  5. Step 5: Solve for x
    x = 115,161,558.22/11,565.12
  6. Step 6: Final answer
    x = 9,957.66

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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.