Home / 13,214.20-18,235.61-7,245.75

Finding the Fourth Proportional to 13,214.20, 18,235.61 and 7,245.75

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Solution

The fourth proportional to 13,214.20, 18,235.61 and 7,245.75 is: 9,999.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,214.20 : 18,235.61 = 7,245.75 : x
  2. Step 2: Convert to fraction form
    13,214.20/18,235.61 = 7,245.75/x
  3. Step 3: Cross multiply
    13,214.20x = 18,235.61 × 7,245.75
  4. Step 4: Simplify right side
    13,214.20x = 132,130,671.16
  5. Step 5: Solve for x
    x = 132,130,671.16/13,214.20
  6. Step 6: Final answer
    x = 9,999.14

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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.