Home / 13,722.52-18,936.90-7,753.80

Finding the Fourth Proportional to 13,722.52, 18,936.90 and 7,753.80

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Solution

The fourth proportional to 13,722.52, 18,936.90 and 7,753.80 is: 10,700.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.52 : 18,936.90 = 7,753.80 : x
  2. Step 2: Convert to fraction form
    13,722.52/18,936.90 = 7,753.80/x
  3. Step 3: Cross multiply
    13,722.52x = 18,936.90 × 7,753.80
  4. Step 4: Simplify right side
    13,722.52x = 146,832,935.22
  5. Step 5: Solve for x
    x = 146,832,935.22/13,722.52
  6. Step 6: Final answer
    x = 10,700.14

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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.