Home / 13,720.15-18,933.69-7,752.97

Finding the Fourth Proportional to 13,720.15, 18,933.69 and 7,752.97

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Solution

The fourth proportional to 13,720.15, 18,933.69 and 7,752.97 is: 10,699.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.15 : 18,933.69 = 7,752.97 : x
  2. Step 2: Convert to fraction form
    13,720.15/18,933.69 = 7,752.97/x
  3. Step 3: Cross multiply
    13,720.15x = 18,933.69 × 7,752.97
  4. Step 4: Simplify right side
    13,720.15x = 146,792,330.56
  5. Step 5: Solve for x
    x = 146,792,330.56/13,720.15
  6. Step 6: Final answer
    x = 10,699.03

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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.