Home / 13,431.32-18,536.40-7,464.20

Finding the Fourth Proportional to 13,431.32, 18,536.40 and 7,464.20

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Solution

The fourth proportional to 13,431.32, 18,536.40 and 7,464.20 is: 10,301.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.32 : 18,536.40 = 7,464.20 : x
  2. Step 2: Convert to fraction form
    13,431.32/18,536.40 = 7,464.20/x
  3. Step 3: Cross multiply
    13,431.32x = 18,536.40 × 7,464.20
  4. Step 4: Simplify right side
    13,431.32x = 138,359,396.88
  5. Step 5: Solve for x
    x = 138,359,396.88/13,431.32
  6. Step 6: Final answer
    x = 10,301.25

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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.