Home / 13,188.96-18,199.71-7,219.35

Finding the Fourth Proportional to 13,188.96, 18,199.71 and 7,219.35

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Solution

The fourth proportional to 13,188.96, 18,199.71 and 7,219.35 is: 9,962.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.96 : 18,199.71 = 7,219.35 : x
  2. Step 2: Convert to fraction form
    13,188.96/18,199.71 = 7,219.35/x
  3. Step 3: Cross multiply
    13,188.96x = 18,199.71 × 7,219.35
  4. Step 4: Simplify right side
    13,188.96x = 131,390,076.39
  5. Step 5: Solve for x
    x = 131,390,076.39/13,188.96
  6. Step 6: Final answer
    x = 9,962.13

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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.