Home / 13,586.72-18,741.04-9,815.42

Finding the Fourth Proportional to 13,586.72, 18,741.04 and 9,815.42

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Solution

The fourth proportional to 13,586.72, 18,741.04 and 9,815.42 is: 13,539.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.72 : 18,741.04 = 9,815.42 : x
  2. Step 2: Convert to fraction form
    13,586.72/18,741.04 = 9,815.42/x
  3. Step 3: Cross multiply
    13,586.72x = 18,741.04 × 9,815.42
  4. Step 4: Simplify right side
    13,586.72x = 183,951,201.15
  5. Step 5: Solve for x
    x = 183,951,201.15/13,586.72
  6. Step 6: Final answer
    x = 13,539.05

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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.