Home / 13,828.32-20,742.45-3,440.07

Finding the Fourth Proportional to 13,828.32, 20,742.45 and 3,440.07

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Solution

The fourth proportional to 13,828.32, 20,742.45 and 3,440.07 is: 5,160.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.32 : 20,742.45 = 3,440.07 : x
  2. Step 2: Convert to fraction form
    13,828.32/20,742.45 = 3,440.07/x
  3. Step 3: Cross multiply
    13,828.32x = 20,742.45 × 3,440.07
  4. Step 4: Simplify right side
    13,828.32x = 71,355,479.97
  5. Step 5: Solve for x
    x = 71,355,479.97/13,828.32
  6. Step 6: Final answer
    x = 5,160.10

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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.