Home / 13,721.62-18,935.64-7,753.10

Finding the Fourth Proportional to 13,721.62, 18,935.64 and 7,753.10

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Solution

The fourth proportional to 13,721.62, 18,935.64 and 7,753.10 is: 10,699.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.62 : 18,935.64 = 7,753.10 : x
  2. Step 2: Convert to fraction form
    13,721.62/18,935.64 = 7,753.10/x
  3. Step 3: Cross multiply
    13,721.62x = 18,935.64 × 7,753.10
  4. Step 4: Simplify right side
    13,721.62x = 146,809,910.48
  5. Step 5: Solve for x
    x = 146,809,910.48/13,721.62
  6. Step 6: Final answer
    x = 10,699.17

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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.