Home / 13,185.10-18,195.45-7,216.77

Finding the Fourth Proportional to 13,185.10, 18,195.45 and 7,216.77

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Solution

The fourth proportional to 13,185.10, 18,195.45 and 7,216.77 is: 9,959.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.10 : 18,195.45 = 7,216.77 : x
  2. Step 2: Convert to fraction form
    13,185.10/18,195.45 = 7,216.77/x
  3. Step 3: Cross multiply
    13,185.10x = 18,195.45 × 7,216.77
  4. Step 4: Simplify right side
    13,185.10x = 131,312,377.70
  5. Step 5: Solve for x
    x = 131,312,377.70/13,185.10
  6. Step 6: Final answer
    x = 9,959.15

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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.