Home / 12,712.78-19,068.90-4,392.54

Finding the Fourth Proportional to 12,712.78, 19,068.90 and 4,392.54

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Solution

The fourth proportional to 12,712.78, 19,068.90 and 4,392.54 is: 6,588.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712.78 : 19,068.90 = 4,392.54 : x
  2. Step 2: Convert to fraction form
    12,712.78/19,068.90 = 4,392.54/x
  3. Step 3: Cross multiply
    12,712.78x = 19,068.90 × 4,392.54
  4. Step 4: Simplify right side
    12,712.78x = 83,760,906.01
  5. Step 5: Solve for x
    x = 83,760,906.01/12,712.78
  6. Step 6: Final answer
    x = 6,588.72

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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.