Home / 13,181.29-18,190.20-7,213.00

Finding the Fourth Proportional to 13,181.29, 18,190.20 and 7,213.00

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Solution

The fourth proportional to 13,181.29, 18,190.20 and 7,213.00 is: 9,953.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.29 : 18,190.20 = 7,213.00 : x
  2. Step 2: Convert to fraction form
    13,181.29/18,190.20 = 7,213.00/x
  3. Step 3: Cross multiply
    13,181.29x = 18,190.20 × 7,213.00
  4. Step 4: Simplify right side
    13,181.29x = 131,205,913.06
  5. Step 5: Solve for x
    x = 131,205,913.06/13,181.29
  6. Step 6: Final answer
    x = 9,953.95

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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.