Home / 13,891.78-19,170.60-9,177.04

Finding the Fourth Proportional to 13,891.78, 19,170.60 and 9,177.04

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Solution

The fourth proportional to 13,891.78, 19,170.60 and 9,177.04 is: 12,664.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891.78 : 19,170.60 = 9,177.04 : x
  2. Step 2: Convert to fraction form
    13,891.78/19,170.60 = 9,177.04/x
  3. Step 3: Cross multiply
    13,891.78x = 19,170.60 × 9,177.04
  4. Step 4: Simplify right side
    13,891.78x = 175,929,363.02
  5. Step 5: Solve for x
    x = 175,929,363.02/13,891.78
  6. Step 6: Final answer
    x = 12,664.28

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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.