Home / 13,131.40-19,690.24-6,465.12

Finding the Fourth Proportional to 13,131.40, 19,690.24 and 6,465.12

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Solution

The fourth proportional to 13,131.40, 19,690.24 and 6,465.12 is: 9,694.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.40 : 19,690.24 = 6,465.12 : x
  2. Step 2: Convert to fraction form
    13,131.40/19,690.24 = 6,465.12/x
  3. Step 3: Cross multiply
    13,131.40x = 19,690.24 × 6,465.12
  4. Step 4: Simplify right side
    13,131.40x = 127,299,764.43
  5. Step 5: Solve for x
    x = 127,299,764.43/13,131.40
  6. Step 6: Final answer
    x = 9,694.30

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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.