Home / 21,790.47-30,073.37-12,360.75

Finding the Fourth Proportional to 21,790.47, 30,073.37 and 12,360.75

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Solution

The fourth proportional to 21,790.47, 30,073.37 and 12,360.75 is: 17,059.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,790.47 : 30,073.37 = 12,360.75 : x
  2. Step 2: Convert to fraction form
    21,790.47/30,073.37 = 12,360.75/x
  3. Step 3: Cross multiply
    21,790.47x = 30,073.37 × 12,360.75
  4. Step 4: Simplify right side
    21,790.47x = 371,729,408.23
  5. Step 5: Solve for x
    x = 371,729,408.23/21,790.47
  6. Step 6: Final answer
    x = 17,059.27

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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.