Home / 12,256.22-18,358.40-10,171.28

Finding the Fourth Proportional to 12,256.22, 18,358.40 and 10,171.28

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Solution

The fourth proportional to 12,256.22, 18,358.40 and 10,171.28 is: 15,235.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,256.22 : 18,358.40 = 10,171.28 : x
  2. Step 2: Convert to fraction form
    12,256.22/18,358.40 = 10,171.28/x
  3. Step 3: Cross multiply
    12,256.22x = 18,358.40 × 10,171.28
  4. Step 4: Simplify right side
    12,256.22x = 186,728,426.75
  5. Step 5: Solve for x
    x = 186,728,426.75/12,256.22
  6. Step 6: Final answer
    x = 15,235.40

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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.