Home / 13,500.12-18,629.28-8,464.13

Finding the Fourth Proportional to 13,500.12, 18,629.28 and 8,464.13

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Solution

The fourth proportional to 13,500.12, 18,629.28 and 8,464.13 is: 11,679.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,500.12 : 18,629.28 = 8,464.13 : x
  2. Step 2: Convert to fraction form
    13,500.12/18,629.28 = 8,464.13/x
  3. Step 3: Cross multiply
    13,500.12x = 18,629.28 × 8,464.13
  4. Step 4: Simplify right side
    13,500.12x = 157,680,554.58
  5. Step 5: Solve for x
    x = 157,680,554.58/13,500.12
  6. Step 6: Final answer
    x = 11,679.94

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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.