Home / 15,138.28-20,884.26-10,661.32

Finding the Fourth Proportional to 15,138.28, 20,884.26 and 10,661.32

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Solution

The fourth proportional to 15,138.28, 20,884.26 and 10,661.32 is: 14,708.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138.28 : 20,884.26 = 10,661.32 : x
  2. Step 2: Convert to fraction form
    15,138.28/20,884.26 = 10,661.32/x
  3. Step 3: Cross multiply
    15,138.28x = 20,884.26 × 10,661.32
  4. Step 4: Simplify right side
    15,138.28x = 222,653,778.82
  5. Step 5: Solve for x
    x = 222,653,778.82/15,138.28
  6. Step 6: Final answer
    x = 14,708.00

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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.