Home / 39,243.96-54,156.40-21,338.51

Finding the Fourth Proportional to 39,243.96, 54,156.40 and 21,338.51

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Solution

The fourth proportional to 39,243.96, 54,156.40 and 21,338.51 is: 29,446.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,243.96 : 54,156.40 = 21,338.51 : x
  2. Step 2: Convert to fraction form
    39,243.96/54,156.40 = 21,338.51/x
  3. Step 3: Cross multiply
    39,243.96x = 54,156.40 × 21,338.51
  4. Step 4: Simplify right side
    39,243.96x = 1,155,616,558.84
  5. Step 5: Solve for x
    x = 1,155,616,558.84/39,243.96
  6. Step 6: Final answer
    x = 29,446.99

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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.