Home / 28,284.24-42,425.04-11,640.12

Finding the Fourth Proportional to 28,284.24, 42,425.04 and 11,640.12

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Solution

The fourth proportional to 28,284.24, 42,425.04 and 11,640.12 is: 17,459.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,284.24 : 42,425.04 = 11,640.12 : x
  2. Step 2: Convert to fraction form
    28,284.24/42,425.04 = 11,640.12/x
  3. Step 3: Cross multiply
    28,284.24x = 42,425.04 × 11,640.12
  4. Step 4: Simplify right side
    28,284.24x = 493,832,556.60
  5. Step 5: Solve for x
    x = 493,832,556.60/28,284.24
  6. Step 6: Final answer
    x = 17,459.64

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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.