Home / 13,210.92-18,231.12-7,242.57

Finding the Fourth Proportional to 13,210.92, 18,231.12 and 7,242.57

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Solution

The fourth proportional to 13,210.92, 18,231.12 and 7,242.57 is: 9,994.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.92 : 18,231.12 = 7,242.57 : x
  2. Step 2: Convert to fraction form
    13,210.92/18,231.12 = 7,242.57/x
  3. Step 3: Cross multiply
    13,210.92x = 18,231.12 × 7,242.57
  4. Step 4: Simplify right side
    13,210.92x = 132,040,162.78
  5. Step 5: Solve for x
    x = 132,040,162.78/13,210.92
  6. Step 6: Final answer
    x = 9,994.77

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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.