Home / 13,486.13-18,610.93-7,517.90

Finding the Fourth Proportional to 13,486.13, 18,610.93 and 7,517.90

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Solution

The fourth proportional to 13,486.13, 18,610.93 and 7,517.90 is: 10,374.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486.13 : 18,610.93 = 7,517.90 : x
  2. Step 2: Convert to fraction form
    13,486.13/18,610.93 = 7,517.90/x
  3. Step 3: Cross multiply
    13,486.13x = 18,610.93 × 7,517.90
  4. Step 4: Simplify right side
    13,486.13x = 139,915,110.65
  5. Step 5: Solve for x
    x = 139,915,110.65/13,486.13
  6. Step 6: Final answer
    x = 10,374.74

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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.