Home / 12,505.72-17,256.52-6,915.64

Finding the Fourth Proportional to 12,505.72, 17,256.52 and 6,915.64

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Solution

The fourth proportional to 12,505.72, 17,256.52 and 6,915.64 is: 9,542.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.72 : 17,256.52 = 6,915.64 : x
  2. Step 2: Convert to fraction form
    12,505.72/17,256.52 = 6,915.64/x
  3. Step 3: Cross multiply
    12,505.72x = 17,256.52 × 6,915.64
  4. Step 4: Simplify right side
    12,505.72x = 119,339,879.97
  5. Step 5: Solve for x
    x = 119,339,879.97/12,505.72
  6. Step 6: Final answer
    x = 9,542.82

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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.