Home / 13,188.16-18,199.67-7,219.83

Finding the Fourth Proportional to 13,188.16, 18,199.67 and 7,219.83

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Solution

The fourth proportional to 13,188.16, 18,199.67 and 7,219.83 is: 9,963.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.16 : 18,199.67 = 7,219.83 : x
  2. Step 2: Convert to fraction form
    13,188.16/18,199.67 = 7,219.83/x
  3. Step 3: Cross multiply
    13,188.16x = 18,199.67 × 7,219.83
  4. Step 4: Simplify right side
    13,188.16x = 131,398,523.46
  5. Step 5: Solve for x
    x = 131,398,523.46/13,188.16
  6. Step 6: Final answer
    x = 9,963.37

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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.