Home / 13,105.04-18,084.80-7,136.80

Finding the Fourth Proportional to 13,105.04, 18,084.80 and 7,136.80

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Solution

The fourth proportional to 13,105.04, 18,084.80 and 7,136.80 is: 9,848.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,105.04 : 18,084.80 = 7,136.80 : x
  2. Step 2: Convert to fraction form
    13,105.04/18,084.80 = 7,136.80/x
  3. Step 3: Cross multiply
    13,105.04x = 18,084.80 × 7,136.80
  4. Step 4: Simplify right side
    13,105.04x = 129,067,600.64
  5. Step 5: Solve for x
    x = 129,067,600.64/13,105.04
  6. Step 6: Final answer
    x = 9,848.70

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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.