Home / 13,753.78-18,946.59-9,965.74

Finding the Fourth Proportional to 13,753.78, 18,946.59 and 9,965.74

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Solution

The fourth proportional to 13,753.78, 18,946.59 and 9,965.74 is: 13,728.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,753.78 : 18,946.59 = 9,965.74 : x
  2. Step 2: Convert to fraction form
    13,753.78/18,946.59 = 9,965.74/x
  3. Step 3: Cross multiply
    13,753.78x = 18,946.59 × 9,965.74
  4. Step 4: Simplify right side
    13,753.78x = 188,816,789.83
  5. Step 5: Solve for x
    x = 188,816,789.83/13,753.78
  6. Step 6: Final answer
    x = 13,728.36

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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.