Home / 13,308.32-19,968.24-7,145.12

Finding the Fourth Proportional to 13,308.32, 19,968.24 and 7,145.12

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Solution

The fourth proportional to 13,308.32, 19,968.24 and 7,145.12 is: 10,720.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308.32 : 19,968.24 = 7,145.12 : x
  2. Step 2: Convert to fraction form
    13,308.32/19,968.24 = 7,145.12/x
  3. Step 3: Cross multiply
    13,308.32x = 19,968.24 × 7,145.12
  4. Step 4: Simplify right side
    13,308.32x = 142,675,470.99
  5. Step 5: Solve for x
    x = 142,675,470.99/13,308.32
  6. Step 6: Final answer
    x = 10,720.77

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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.