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Finding the Fourth Proportional to 13,348.80, 19,984.80 and 11,966.40

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Solution

The fourth proportional to 13,348.80, 19,984.80 and 11,966.40 is: 17,915.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.80 : 19,984.80 = 11,966.40 : x
  2. Step 2: Convert to fraction form
    13,348.80/19,984.80 = 11,966.40/x
  3. Step 3: Cross multiply
    13,348.80x = 19,984.80 × 11,966.40
  4. Step 4: Simplify right side
    13,348.80x = 239,146,110.72
  5. Step 5: Solve for x
    x = 239,146,110.72/13,348.80
  6. Step 6: Final answer
    x = 17,915.18

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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.