Home / 39,409.30-54,384.38-21,504.60

Finding the Fourth Proportional to 39,409.30, 54,384.38 and 21,504.60

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Solution

The fourth proportional to 39,409.30, 54,384.38 and 21,504.60 is: 29,676.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,409.30 : 54,384.38 = 21,504.60 : x
  2. Step 2: Convert to fraction form
    39,409.30/54,384.38 = 21,504.60/x
  3. Step 3: Cross multiply
    39,409.30x = 54,384.38 × 21,504.60
  4. Step 4: Simplify right side
    39,409.30x = 1,169,514,338.15
  5. Step 5: Solve for x
    x = 1,169,514,338.15/39,409.30
  6. Step 6: Final answer
    x = 29,676.10

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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.