Home / 11,455.32-17,182.02-7,781.16

Finding the Fourth Proportional to 11,455.32, 17,182.02 and 7,781.16

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Solution

The fourth proportional to 11,455.32, 17,182.02 and 7,781.16 is: 11,671.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,455.32 : 17,182.02 = 7,781.16 : x
  2. Step 2: Convert to fraction form
    11,455.32/17,182.02 = 7,781.16/x
  3. Step 3: Cross multiply
    11,455.32x = 17,182.02 × 7,781.16
  4. Step 4: Simplify right side
    11,455.32x = 133,696,046.74
  5. Step 5: Solve for x
    x = 133,696,046.74/11,455.32
  6. Step 6: Final answer
    x = 11,671.09

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1.5x scale

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.