Home / 13,410.90-18,507.20-7,443.15

Finding the Fourth Proportional to 13,410.90, 18,507.20 and 7,443.15

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Solution

The fourth proportional to 13,410.90, 18,507.20 and 7,443.15 is: 10,271.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.90 : 18,507.20 = 7,443.15 : x
  2. Step 2: Convert to fraction form
    13,410.90/18,507.20 = 7,443.15/x
  3. Step 3: Cross multiply
    13,410.90x = 18,507.20 × 7,443.15
  4. Step 4: Simplify right side
    13,410.90x = 137,751,865.68
  5. Step 5: Solve for x
    x = 137,751,865.68/13,410.90
  6. Step 6: Final answer
    x = 10,271.63

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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.