Home / 13,237.86-18,268.27-7,188.11

Finding the Fourth Proportional to 13,237.86, 18,268.27 and 7,188.11

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Solution

The fourth proportional to 13,237.86, 18,268.27 and 7,188.11 is: 9,919.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,237.86 : 18,268.27 = 7,188.11 : x
  2. Step 2: Convert to fraction form
    13,237.86/18,268.27 = 7,188.11/x
  3. Step 3: Cross multiply
    13,237.86x = 18,268.27 × 7,188.11
  4. Step 4: Simplify right side
    13,237.86x = 131,314,293.46
  5. Step 5: Solve for x
    x = 131,314,293.46/13,237.86
  6. Step 6: Final answer
    x = 9,919.60

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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.