Home / 13,104.57-18,084.38-7,136.40

Finding the Fourth Proportional to 13,104.57, 18,084.38 and 7,136.40

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Solution

The fourth proportional to 13,104.57, 18,084.38 and 7,136.40 is: 9,848.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,104.57 : 18,084.38 = 7,136.40 : x
  2. Step 2: Convert to fraction form
    13,104.57/18,084.38 = 7,136.40/x
  3. Step 3: Cross multiply
    13,104.57x = 18,084.38 × 7,136.40
  4. Step 4: Simplify right side
    13,104.57x = 129,057,333.75
  5. Step 5: Solve for x
    x = 129,057,333.75/13,104.57
  6. Step 6: Final answer
    x = 9,848.27

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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.