Home / 39,409.25-54,384.57-21,504.20

Finding the Fourth Proportional to 39,409.25, 54,384.57 and 21,504.20

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Solution

The fourth proportional to 39,409.25, 54,384.57 and 21,504.20 is: 29,675.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,409.25 : 54,384.57 = 21,504.20 : x
  2. Step 2: Convert to fraction form
    39,409.25/54,384.57 = 21,504.20/x
  3. Step 3: Cross multiply
    39,409.25x = 54,384.57 × 21,504.20
  4. Step 4: Simplify right side
    39,409.25x = 1,169,496,670.19
  5. Step 5: Solve for x
    x = 1,169,496,670.19/39,409.25
  6. Step 6: Final answer
    x = 29,675.69

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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.