Home / 15,349.77-21,181.19-8,635.25

Finding the Fourth Proportional to 15,349.77, 21,181.19 and 8,635.25

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Solution

The fourth proportional to 15,349.77, 21,181.19 and 8,635.25 is: 11,915.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,349.77 : 21,181.19 = 8,635.25 : x
  2. Step 2: Convert to fraction form
    15,349.77/21,181.19 = 8,635.25/x
  3. Step 3: Cross multiply
    15,349.77x = 21,181.19 × 8,635.25
  4. Step 4: Simplify right side
    15,349.77x = 182,904,880.72
  5. Step 5: Solve for x
    x = 182,904,880.72/15,349.77
  6. Step 6: Final answer
    x = 11,915.81

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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.