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Finding the Fourth Proportional to 39,396.58, 54,368.69 and 22,401.56

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Solution

The fourth proportional to 39,396.58, 54,368.69 and 22,401.56 is: 30,914.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,396.58 : 54,368.69 = 22,401.56 : x
  2. Step 2: Convert to fraction form
    39,396.58/54,368.69 = 22,401.56/x
  3. Step 3: Cross multiply
    39,396.58x = 54,368.69 × 22,401.56
  4. Step 4: Simplify right side
    39,396.58x = 1,217,943,495.07
  5. Step 5: Solve for x
    x = 1,217,943,495.07/39,396.58
  6. Step 6: Final answer
    x = 30,914.96

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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.