Home / 13,720.80-18,933.57-7,753.53

Finding the Fourth Proportional to 13,720.80, 18,933.57 and 7,753.53

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Solution

The fourth proportional to 13,720.80, 18,933.57 and 7,753.53 is: 10,699.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.80 : 18,933.57 = 7,753.53 : x
  2. Step 2: Convert to fraction form
    13,720.80/18,933.57 = 7,753.53/x
  3. Step 3: Cross multiply
    13,720.80x = 18,933.57 × 7,753.53
  4. Step 4: Simplify right side
    13,720.80x = 146,802,003.00
  5. Step 5: Solve for x
    x = 146,802,003.00/13,720.80
  6. Step 6: Final answer
    x = 10,699.23

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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.