Home / 13,436.66-20,138.27-7,181.24

Finding the Fourth Proportional to 13,436.66, 20,138.27 and 7,181.24

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Solution

The fourth proportional to 13,436.66, 20,138.27 and 7,181.24 is: 10,762.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,436.66 : 20,138.27 = 7,181.24 : x
  2. Step 2: Convert to fraction form
    13,436.66/20,138.27 = 7,181.24/x
  3. Step 3: Cross multiply
    13,436.66x = 20,138.27 × 7,181.24
  4. Step 4: Simplify right side
    13,436.66x = 144,617,613.46
  5. Step 5: Solve for x
    x = 144,617,613.46/13,436.66
  6. Step 6: Final answer
    x = 10,762.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.