Home / 13,162.24-18,157.70-7,781.10

Finding the Fourth Proportional to 13,162.24, 18,157.70 and 7,781.10

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Solution

The fourth proportional to 13,162.24, 18,157.70 and 7,781.10 is: 10,734.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,162.24 : 18,157.70 = 7,781.10 : x
  2. Step 2: Convert to fraction form
    13,162.24/18,157.70 = 7,781.10/x
  3. Step 3: Cross multiply
    13,162.24x = 18,157.70 × 7,781.10
  4. Step 4: Simplify right side
    13,162.24x = 141,286,879.47
  5. Step 5: Solve for x
    x = 141,286,879.47/13,162.24
  6. Step 6: Final answer
    x = 10,734.26

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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.