Home / 16,820.12-23,217.36-11,530.28

Finding the Fourth Proportional to 16,820.12, 23,217.36 and 11,530.28

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Solution

The fourth proportional to 16,820.12, 23,217.36 and 11,530.28 is: 15,915.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,820.12 : 23,217.36 = 11,530.28 : x
  2. Step 2: Convert to fraction form
    16,820.12/23,217.36 = 11,530.28/x
  3. Step 3: Cross multiply
    16,820.12x = 23,217.36 × 11,530.28
  4. Step 4: Simplify right side
    16,820.12x = 267,702,661.66
  5. Step 5: Solve for x
    x = 267,702,661.66/16,820.12
  6. Step 6: Final answer
    x = 15,915.62

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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.