Home / 13,188.32-18,199.85-7,219.93

Finding the Fourth Proportional to 13,188.32, 18,199.85 and 7,219.93

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Solution

The fourth proportional to 13,188.32, 18,199.85 and 7,219.93 is: 9,963.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.32 : 18,199.85 = 7,219.93 : x
  2. Step 2: Convert to fraction form
    13,188.32/18,199.85 = 7,219.93/x
  3. Step 3: Cross multiply
    13,188.32x = 18,199.85 × 7,219.93
  4. Step 4: Simplify right side
    13,188.32x = 131,401,646.72
  5. Step 5: Solve for x
    x = 131,401,646.72/13,188.32
  6. Step 6: Final answer
    x = 9,963.49

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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.