Home / 13,188.60-18,199.08-7,524.72

Finding the Fourth Proportional to 13,188.60, 18,199.08 and 7,524.72

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Solution

The fourth proportional to 13,188.60, 18,199.08 and 7,524.72 is: 10,383.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.60 : 18,199.08 = 7,524.72 : x
  2. Step 2: Convert to fraction form
    13,188.60/18,199.08 = 7,524.72/x
  3. Step 3: Cross multiply
    13,188.60x = 18,199.08 × 7,524.72
  4. Step 4: Simplify right side
    13,188.60x = 136,942,981.26
  5. Step 5: Solve for x
    x = 136,942,981.26/13,188.60
  6. Step 6: Final answer
    x = 10,383.44

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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.