Home / 12,165.64-18,202.89-8,663.74

Finding the Fourth Proportional to 12,165.64, 18,202.89 and 8,663.74

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Solution

The fourth proportional to 12,165.64, 18,202.89 and 8,663.74 is: 12,963.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165.64 : 18,202.89 = 8,663.74 : x
  2. Step 2: Convert to fraction form
    12,165.64/18,202.89 = 8,663.74/x
  3. Step 3: Cross multiply
    12,165.64x = 18,202.89 × 8,663.74
  4. Step 4: Simplify right side
    12,165.64x = 157,705,106.21
  5. Step 5: Solve for x
    x = 157,705,106.21/12,165.64
  6. Step 6: Final answer
    x = 12,963.16

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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.