Home / 13,326.42-19,982.88-7,781.16

Finding the Fourth Proportional to 13,326.42, 19,982.88 and 7,781.16

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Solution

The fourth proportional to 13,326.42, 19,982.88 and 7,781.16 is: 11,667.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,326.42 : 19,982.88 = 7,781.16 : x
  2. Step 2: Convert to fraction form
    13,326.42/19,982.88 = 7,781.16/x
  3. Step 3: Cross multiply
    13,326.42x = 19,982.88 × 7,781.16
  4. Step 4: Simplify right side
    13,326.42x = 155,489,986.54
  5. Step 5: Solve for x
    x = 155,489,986.54/13,326.42
  6. Step 6: Final answer
    x = 11,667.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.