Home / 13,187.60-18,197.96-7,219.16

Finding the Fourth Proportional to 13,187.60, 18,197.96 and 7,219.16

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Solution

The fourth proportional to 13,187.60, 18,197.96 and 7,219.16 is: 9,961.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.60 : 18,197.96 = 7,219.16 : x
  2. Step 2: Convert to fraction form
    13,187.60/18,197.96 = 7,219.16/x
  3. Step 3: Cross multiply
    13,187.60x = 18,197.96 × 7,219.16
  4. Step 4: Simplify right side
    13,187.60x = 131,373,984.91
  5. Step 5: Solve for x
    x = 131,373,984.91/13,187.60
  6. Step 6: Final answer
    x = 9,961.93

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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.