Home / 21,708.63-29,982.42-14,622.75

Finding the Fourth Proportional to 21,708.63, 29,982.42 and 14,622.75

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Solution

The fourth proportional to 21,708.63, 29,982.42 and 14,622.75 is: 20,195.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,708.63 : 29,982.42 = 14,622.75 : x
  2. Step 2: Convert to fraction form
    21,708.63/29,982.42 = 14,622.75/x
  3. Step 3: Cross multiply
    21,708.63x = 29,982.42 × 14,622.75
  4. Step 4: Simplify right side
    21,708.63x = 438,425,432.06
  5. Step 5: Solve for x
    x = 438,425,432.06/21,708.63
  6. Step 6: Final answer
    x = 20,195.91

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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.