Home / 13,181.76-19,772.72-5,390.58

Finding the Fourth Proportional to 13,181.76, 19,772.72 and 5,390.58

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Solution

The fourth proportional to 13,181.76, 19,772.72 and 5,390.58 is: 8,085.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.76 : 19,772.72 = 5,390.58 : x
  2. Step 2: Convert to fraction form
    13,181.76/19,772.72 = 5,390.58/x
  3. Step 3: Cross multiply
    13,181.76x = 19,772.72 × 5,390.58
  4. Step 4: Simplify right side
    13,181.76x = 106,586,337.14
  5. Step 5: Solve for x
    x = 106,586,337.14/13,181.76
  6. Step 6: Final answer
    x = 8,085.89

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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.