Home / 13,188.10-18,199.62-7,219.84

Finding the Fourth Proportional to 13,188.10, 18,199.62 and 7,219.84

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Solution

The fourth proportional to 13,188.10, 18,199.62 and 7,219.84 is: 9,963.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.10 : 18,199.62 = 7,219.84 : x
  2. Step 2: Convert to fraction form
    13,188.10/18,199.62 = 7,219.84/x
  3. Step 3: Cross multiply
    13,188.10x = 18,199.62 × 7,219.84
  4. Step 4: Simplify right side
    13,188.10x = 131,398,344.46
  5. Step 5: Solve for x
    x = 131,398,344.46/13,188.10
  6. Step 6: Final answer
    x = 9,963.40

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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.