Home / 13,211.04-19,819.76-3,977.04

Finding the Fourth Proportional to 13,211.04, 19,819.76 and 3,977.04

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Solution

The fourth proportional to 13,211.04, 19,819.76 and 3,977.04 is: 5,966.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.04 : 19,819.76 = 3,977.04 : x
  2. Step 2: Convert to fraction form
    13,211.04/19,819.76 = 3,977.04/x
  3. Step 3: Cross multiply
    13,211.04x = 19,819.76 × 3,977.04
  4. Step 4: Simplify right side
    13,211.04x = 78,823,978.31
  5. Step 5: Solve for x
    x = 78,823,978.31/13,211.04
  6. Step 6: Final answer
    x = 5,966.52

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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.