Home / 22,143.78-30,558.87-12,712.95

Finding the Fourth Proportional to 22,143.78, 30,558.87 and 12,712.95

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Solution

The fourth proportional to 22,143.78, 30,558.87 and 12,712.95 is: 17,544.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,143.78 : 30,558.87 = 12,712.95 : x
  2. Step 2: Convert to fraction form
    22,143.78/30,558.87 = 12,712.95/x
  3. Step 3: Cross multiply
    22,143.78x = 30,558.87 × 12,712.95
  4. Step 4: Simplify right side
    22,143.78x = 388,493,386.37
  5. Step 5: Solve for x
    x = 388,493,386.37/22,143.78
  6. Step 6: Final answer
    x = 17,544.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.