Home / 23,013.55-31,756.39-12,940.39

Finding the Fourth Proportional to 23,013.55, 31,756.39 and 12,940.39

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Solution

The fourth proportional to 23,013.55, 31,756.39 and 12,940.39 is: 17,856.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,013.55 : 31,756.39 = 12,940.39 : x
  2. Step 2: Convert to fraction form
    23,013.55/31,756.39 = 12,940.39/x
  3. Step 3: Cross multiply
    23,013.55x = 31,756.39 × 12,940.39
  4. Step 4: Simplify right side
    23,013.55x = 410,940,071.59
  5. Step 5: Solve for x
    x = 410,940,071.59/23,013.55
  6. Step 6: Final answer
    x = 17,856.44

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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.