Home / 21,771.90-32,731.67-17,385.60

Finding the Fourth Proportional to 21,771.90, 32,731.67 and 17,385.60

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Solution

The fourth proportional to 21,771.90, 32,731.67 and 17,385.60 is: 26,137.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,771.90 : 32,731.67 = 17,385.60 : x
  2. Step 2: Convert to fraction form
    21,771.90/32,731.67 = 17,385.60/x
  3. Step 3: Cross multiply
    21,771.90x = 32,731.67 × 17,385.60
  4. Step 4: Simplify right side
    21,771.90x = 569,059,471.37
  5. Step 5: Solve for x
    x = 569,059,471.37/21,771.90
  6. Step 6: Final answer
    x = 26,137.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.