Home / 21,600.71-29,809.60-12,647.37

Finding the Fourth Proportional to 21,600.71, 29,809.60 and 12,647.37

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Solution

The fourth proportional to 21,600.71, 29,809.60 and 12,647.37 is: 17,453.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,600.71 : 29,809.60 = 12,647.37 : x
  2. Step 2: Convert to fraction form
    21,600.71/29,809.60 = 12,647.37/x
  3. Step 3: Cross multiply
    21,600.71x = 29,809.60 × 12,647.37
  4. Step 4: Simplify right side
    21,600.71x = 377,013,040.75
  5. Step 5: Solve for x
    x = 377,013,040.75/21,600.71
  6. Step 6: Final answer
    x = 17,453.74

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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.