Home / 13,459.26-20,185.78-5,136.24

Finding the Fourth Proportional to 13,459.26, 20,185.78 and 5,136.24

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Solution

The fourth proportional to 13,459.26, 20,185.78 and 5,136.24 is: 7,703.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459.26 : 20,185.78 = 5,136.24 : x
  2. Step 2: Convert to fraction form
    13,459.26/20,185.78 = 5,136.24/x
  3. Step 3: Cross multiply
    13,459.26x = 20,185.78 × 5,136.24
  4. Step 4: Simplify right side
    13,459.26x = 103,679,010.67
  5. Step 5: Solve for x
    x = 103,679,010.67/13,459.26
  6. Step 6: Final answer
    x = 7,703.17

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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.