Home / 13,447.72-18,558.30-7,479.64

Finding the Fourth Proportional to 13,447.72, 18,558.30 and 7,479.64

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Solution

The fourth proportional to 13,447.72, 18,558.30 and 7,479.64 is: 10,322.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.72 : 18,558.30 = 7,479.64 : x
  2. Step 2: Convert to fraction form
    13,447.72/18,558.30 = 7,479.64/x
  3. Step 3: Cross multiply
    13,447.72x = 18,558.30 × 7,479.64
  4. Step 4: Simplify right side
    13,447.72x = 138,809,403.01
  5. Step 5: Solve for x
    x = 138,809,403.01/13,447.72
  6. Step 6: Final answer
    x = 10,322.15

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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.