Home / 13,653.12-20,479.44-4,419.12

Finding the Fourth Proportional to 13,653.12, 20,479.44 and 4,419.12

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Solution

The fourth proportional to 13,653.12, 20,479.44 and 4,419.12 is: 6,628.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653.12 : 20,479.44 = 4,419.12 : x
  2. Step 2: Convert to fraction form
    13,653.12/20,479.44 = 4,419.12/x
  3. Step 3: Cross multiply
    13,653.12x = 20,479.44 × 4,419.12
  4. Step 4: Simplify right side
    13,653.12x = 90,501,102.89
  5. Step 5: Solve for x
    x = 90,501,102.89/13,653.12
  6. Step 6: Final answer
    x = 6,628.60

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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.