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Finding the Fourth Proportional to 26,331.60, 39,401.40 and 19,419.60

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Solution

The fourth proportional to 26,331.60, 39,401.40 and 19,419.60 is: 29,058.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,331.60 : 39,401.40 = 19,419.60 : x
  2. Step 2: Convert to fraction form
    26,331.60/39,401.40 = 19,419.60/x
  3. Step 3: Cross multiply
    26,331.60x = 39,401.40 × 19,419.60
  4. Step 4: Simplify right side
    26,331.60x = 765,159,427.44
  5. Step 5: Solve for x
    x = 765,159,427.44/26,331.60
  6. Step 6: Final answer
    x = 29,058.60

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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.