Home / 13,178.46-18,186.20-7,210.02

Finding the Fourth Proportional to 13,178.46, 18,186.20 and 7,210.02

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Solution

The fourth proportional to 13,178.46, 18,186.20 and 7,210.02 is: 9,949.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.46 : 18,186.20 = 7,210.02 : x
  2. Step 2: Convert to fraction form
    13,178.46/18,186.20 = 7,210.02/x
  3. Step 3: Cross multiply
    13,178.46x = 18,186.20 × 7,210.02
  4. Step 4: Simplify right side
    13,178.46x = 131,122,865.72
  5. Step 5: Solve for x
    x = 131,122,865.72/13,178.46
  6. Step 6: Final answer
    x = 9,949.79

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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.