Home / 13,767.42-18,999.27-7,479.80

Finding the Fourth Proportional to 13,767.42, 18,999.27 and 7,479.80

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Solution

The fourth proportional to 13,767.42, 18,999.27 and 7,479.80 is: 10,322.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,767.42 : 18,999.27 = 7,479.80 : x
  2. Step 2: Convert to fraction form
    13,767.42/18,999.27 = 7,479.80/x
  3. Step 3: Cross multiply
    13,767.42x = 18,999.27 × 7,479.80
  4. Step 4: Simplify right side
    13,767.42x = 142,110,739.75
  5. Step 5: Solve for x
    x = 142,110,739.75/13,767.42
  6. Step 6: Final answer
    x = 10,322.25

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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.