Home / 28,087.64-42,131.28-11,447.36

Finding the Fourth Proportional to 28,087.64, 42,131.28 and 11,447.36

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Solution

The fourth proportional to 28,087.64, 42,131.28 and 11,447.36 is: 17,170.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,087.64 : 42,131.28 = 11,447.36 : x
  2. Step 2: Convert to fraction form
    28,087.64/42,131.28 = 11,447.36/x
  3. Step 3: Cross multiply
    28,087.64x = 42,131.28 × 11,447.36
  4. Step 4: Simplify right side
    28,087.64x = 482,291,929.42
  5. Step 5: Solve for x
    x = 482,291,929.42/28,087.64
  6. Step 6: Final answer
    x = 17,170.97

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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.