Home / 13,141.29-18,136.91-7,474.68

Finding the Fourth Proportional to 13,141.29, 18,136.91 and 7,474.68

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Solution

The fourth proportional to 13,141.29, 18,136.91 and 7,474.68 is: 10,316.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.29 : 18,136.91 = 7,474.68 : x
  2. Step 2: Convert to fraction form
    13,141.29/18,136.91 = 7,474.68/x
  3. Step 3: Cross multiply
    13,141.29x = 18,136.91 × 7,474.68
  4. Step 4: Simplify right side
    13,141.29x = 135,567,617.13
  5. Step 5: Solve for x
    x = 135,567,617.13/13,141.29
  6. Step 6: Final answer
    x = 10,316.16

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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.