Home / 10,136.62-13,988.87-5,661.48

Finding the Fourth Proportional to 10,136.62, 13,988.87 and 5,661.48

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Solution

The fourth proportional to 10,136.62, 13,988.87 and 5,661.48 is: 7,813.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,136.62 : 13,988.87 = 5,661.48 : x
  2. Step 2: Convert to fraction form
    10,136.62/13,988.87 = 5,661.48/x
  3. Step 3: Cross multiply
    10,136.62x = 13,988.87 × 5,661.48
  4. Step 4: Simplify right side
    10,136.62x = 79,197,707.73
  5. Step 5: Solve for x
    x = 79,197,707.73/10,136.62
  6. Step 6: Final answer
    x = 7,813.03

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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.