Home / 13,181.86-19,780.08-5,396.14

Finding the Fourth Proportional to 13,181.86, 19,780.08 and 5,396.14

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Solution

The fourth proportional to 13,181.86, 19,780.08 and 5,396.14 is: 8,097.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.86 : 19,780.08 = 5,396.14 : x
  2. Step 2: Convert to fraction form
    13,181.86/19,780.08 = 5,396.14/x
  3. Step 3: Cross multiply
    13,181.86x = 19,780.08 × 5,396.14
  4. Step 4: Simplify right side
    13,181.86x = 106,736,080.89
  5. Step 5: Solve for x
    x = 106,736,080.89/13,181.86
  6. Step 6: Final answer
    x = 8,097.19

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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.