Home / 39,396.60-54,365.31-21,491.46

Finding the Fourth Proportional to 39,396.60, 54,365.31 and 21,491.46

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Solution

The fourth proportional to 39,396.60, 54,365.31 and 21,491.46 is: 29,657.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,396.60 : 54,365.31 = 21,491.46 : x
  2. Step 2: Convert to fraction form
    39,396.60/54,365.31 = 21,491.46/x
  3. Step 3: Cross multiply
    39,396.60x = 54,365.31 × 21,491.46
  4. Step 4: Simplify right side
    39,396.60x = 1,168,389,885.25
  5. Step 5: Solve for x
    x = 1,168,389,885.25/39,396.60
  6. Step 6: Final answer
    x = 29,657.12

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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.