Home / 39,427.21-54,408.70-21,522.52

Finding the Fourth Proportional to 39,427.21, 54,408.70 and 21,522.52

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Solution

The fourth proportional to 39,427.21, 54,408.70 and 21,522.52 is: 29,700.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,427.21 : 54,408.70 = 21,522.52 : x
  2. Step 2: Convert to fraction form
    39,427.21/54,408.70 = 21,522.52/x
  3. Step 3: Cross multiply
    39,427.21x = 54,408.70 × 21,522.52
  4. Step 4: Simplify right side
    39,427.21x = 1,171,012,001.72
  5. Step 5: Solve for x
    x = 1,171,012,001.72/39,427.21
  6. Step 6: Final answer
    x = 29,700.60

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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.