Home / 13,524.12-18,661.86-7,857.81

Finding the Fourth Proportional to 13,524.12, 18,661.86 and 7,857.81

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Solution

The fourth proportional to 13,524.12, 18,661.86 and 7,857.81 is: 10,842.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,524.12 : 18,661.86 = 7,857.81 : x
  2. Step 2: Convert to fraction form
    13,524.12/18,661.86 = 7,857.81/x
  3. Step 3: Cross multiply
    13,524.12x = 18,661.86 × 7,857.81
  4. Step 4: Simplify right side
    13,524.12x = 146,641,350.13
  5. Step 5: Solve for x
    x = 146,641,350.13/13,524.12
  6. Step 6: Final answer
    x = 10,842.95

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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.