Home / 13,318.40-19,951.20-11,676.80

Finding the Fourth Proportional to 13,318.40, 19,951.20 and 11,676.80

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Solution

The fourth proportional to 13,318.40, 19,951.20 and 11,676.80 is: 17,492.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.40 : 19,951.20 = 11,676.80 : x
  2. Step 2: Convert to fraction form
    13,318.40/19,951.20 = 11,676.80/x
  3. Step 3: Cross multiply
    13,318.40x = 19,951.20 × 11,676.80
  4. Step 4: Simplify right side
    13,318.40x = 232,966,172.16
  5. Step 5: Solve for x
    x = 232,966,172.16/13,318.40
  6. Step 6: Final answer
    x = 17,492.05

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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.