Home / 12,778.17-19,156.78-5,756.08

Finding the Fourth Proportional to 12,778.17, 19,156.78 and 5,756.08

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Solution

The fourth proportional to 12,778.17, 19,156.78 and 5,756.08 is: 8,629.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.17 : 19,156.78 = 5,756.08 : x
  2. Step 2: Convert to fraction form
    12,778.17/19,156.78 = 5,756.08/x
  3. Step 3: Cross multiply
    12,778.17x = 19,156.78 × 5,756.08
  4. Step 4: Simplify right side
    12,778.17x = 110,267,917.53
  5. Step 5: Solve for x
    x = 110,267,917.53/12,778.17
  6. Step 6: Final answer
    x = 8,629.40

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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.