Home / 13,136.40-19,701.12-5,238.60

Finding the Fourth Proportional to 13,136.40, 19,701.12 and 5,238.60

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Solution

The fourth proportional to 13,136.40, 19,701.12 and 5,238.60 is: 7,856.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.40 : 19,701.12 = 5,238.60 : x
  2. Step 2: Convert to fraction form
    13,136.40/19,701.12 = 5,238.60/x
  3. Step 3: Cross multiply
    13,136.40x = 19,701.12 × 5,238.60
  4. Step 4: Simplify right side
    13,136.40x = 103,206,287.23
  5. Step 5: Solve for x
    x = 103,206,287.23/13,136.40
  6. Step 6: Final answer
    x = 7,856.51

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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.