Home / 13,763.33-18,990.61-8,382.16

Finding the Fourth Proportional to 13,763.33, 18,990.61 and 8,382.16

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Solution

The fourth proportional to 13,763.33, 18,990.61 and 8,382.16 is: 11,565.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,763.33 : 18,990.61 = 8,382.16 : x
  2. Step 2: Convert to fraction form
    13,763.33/18,990.61 = 8,382.16/x
  3. Step 3: Cross multiply
    13,763.33x = 18,990.61 × 8,382.16
  4. Step 4: Simplify right side
    13,763.33x = 159,182,331.52
  5. Step 5: Solve for x
    x = 159,182,331.52/13,763.33
  6. Step 6: Final answer
    x = 11,565.68

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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.