Home / 12,629.40-18,949.56-6,779.17

Finding the Fourth Proportional to 12,629.40, 18,949.56 and 6,779.17

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Solution

The fourth proportional to 12,629.40, 18,949.56 and 6,779.17 is: 10,171.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,629.40 : 18,949.56 = 6,779.17 : x
  2. Step 2: Convert to fraction form
    12,629.40/18,949.56 = 6,779.17/x
  3. Step 3: Cross multiply
    12,629.40x = 18,949.56 × 6,779.17
  4. Step 4: Simplify right side
    12,629.40x = 128,462,288.67
  5. Step 5: Solve for x
    x = 128,462,288.67/12,629.40
  6. Step 6: Final answer
    x = 10,171.69

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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.