Home / 13,185.41-18,195.17-7,215.93

Finding the Fourth Proportional to 13,185.41, 18,195.17 and 7,215.93

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Solution

The fourth proportional to 13,185.41, 18,195.17 and 7,215.93 is: 9,957.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.41 : 18,195.17 = 7,215.93 : x
  2. Step 2: Convert to fraction form
    13,185.41/18,195.17 = 7,215.93/x
  3. Step 3: Cross multiply
    13,185.41x = 18,195.17 × 7,215.93
  4. Step 4: Simplify right side
    13,185.41x = 131,294,968.75
  5. Step 5: Solve for x
    x = 131,294,968.75/13,185.41
  6. Step 6: Final answer
    x = 9,957.59

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Double scale
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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.