Home / 15,165.36-20,915.82-12,733.34

Finding the Fourth Proportional to 15,165.36, 20,915.82 and 12,733.34

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Solution

The fourth proportional to 15,165.36, 20,915.82 and 12,733.34 is: 17,561.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,165.36 : 20,915.82 = 12,733.34 : x
  2. Step 2: Convert to fraction form
    15,165.36/20,915.82 = 12,733.34/x
  3. Step 3: Cross multiply
    15,165.36x = 20,915.82 × 12,733.34
  4. Step 4: Simplify right side
    15,165.36x = 266,328,142.86
  5. Step 5: Solve for x
    x = 266,328,142.86/15,165.36
  6. Step 6: Final answer
    x = 17,561.61

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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.