Home / 18,540.72-27,772.08-13,330.80

Finding the Fourth Proportional to 18,540.72, 27,772.08 and 13,330.80

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Solution

The fourth proportional to 18,540.72, 27,772.08 and 13,330.80 is: 19,968.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,540.72 : 27,772.08 = 13,330.80 : x
  2. Step 2: Convert to fraction form
    18,540.72/27,772.08 = 13,330.80/x
  3. Step 3: Cross multiply
    18,540.72x = 27,772.08 × 13,330.80
  4. Step 4: Simplify right side
    18,540.72x = 370,224,044.06
  5. Step 5: Solve for x
    x = 370,224,044.06/18,540.72
  6. Step 6: Final answer
    x = 19,968.16

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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.