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Finding the Fourth Proportional to 13,410.92, 18,507.22 and 7,443.16

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Solution

The fourth proportional to 13,410.92, 18,507.22 and 7,443.16 is: 10,271.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.92 : 18,507.22 = 7,443.16 : x
  2. Step 2: Convert to fraction form
    13,410.92/18,507.22 = 7,443.16/x
  3. Step 3: Cross multiply
    13,410.92x = 18,507.22 × 7,443.16
  4. Step 4: Simplify right side
    13,410.92x = 137,752,134.74
  5. Step 5: Solve for x
    x = 137,752,134.74/13,410.92
  6. Step 6: Final answer
    x = 10,271.64

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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.