Home / 28,086.64-42,129.78-11,446.36

Finding the Fourth Proportional to 28,086.64, 42,129.78 and 11,446.36

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Solution

The fourth proportional to 28,086.64, 42,129.78 and 11,446.36 is: 17,169.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,086.64 : 42,129.78 = 11,446.36 : x
  2. Step 2: Convert to fraction form
    28,086.64/42,129.78 = 11,446.36/x
  3. Step 3: Cross multiply
    28,086.64x = 42,129.78 × 11,446.36
  4. Step 4: Simplify right side
    28,086.64x = 482,232,628.60
  5. Step 5: Solve for x
    x = 482,232,628.60/28,086.64
  6. Step 6: Final answer
    x = 17,169.47

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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.