Home / 12,906.78-19,358.34-4,140.56

Finding the Fourth Proportional to 12,906.78, 19,358.34 and 4,140.56

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Solution

The fourth proportional to 12,906.78, 19,358.34 and 4,140.56 is: 6,210.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,906.78 : 19,358.34 = 4,140.56 : x
  2. Step 2: Convert to fraction form
    12,906.78/19,358.34 = 4,140.56/x
  3. Step 3: Cross multiply
    12,906.78x = 19,358.34 × 4,140.56
  4. Step 4: Simplify right side
    12,906.78x = 80,154,271.48
  5. Step 5: Solve for x
    x = 80,154,271.48/12,906.78
  6. Step 6: Final answer
    x = 6,210.25

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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.