Home / 13,617.28-18,772.32-8,899.84

Finding the Fourth Proportional to 13,617.28, 18,772.32 and 8,899.84

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Solution

The fourth proportional to 13,617.28, 18,772.32 and 8,899.84 is: 12,269.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.28 : 18,772.32 = 8,899.84 : x
  2. Step 2: Convert to fraction form
    13,617.28/18,772.32 = 8,899.84/x
  3. Step 3: Cross multiply
    13,617.28x = 18,772.32 × 8,899.84
  4. Step 4: Simplify right side
    13,617.28x = 167,070,644.43
  5. Step 5: Solve for x
    x = 167,070,644.43/13,617.28
  6. Step 6: Final answer
    x = 12,269.02

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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.