Home / 39,143.63-54,016.62-21,237.95

Finding the Fourth Proportional to 39,143.63, 54,016.62 and 21,237.95

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Solution

The fourth proportional to 39,143.63, 54,016.62 and 21,237.95 is: 29,307.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,143.63 : 54,016.62 = 21,237.95 : x
  2. Step 2: Convert to fraction form
    39,143.63/54,016.62 = 21,237.95/x
  3. Step 3: Cross multiply
    39,143.63x = 54,016.62 × 21,237.95
  4. Step 4: Simplify right side
    39,143.63x = 1,147,202,004.65
  5. Step 5: Solve for x
    x = 1,147,202,004.65/39,143.63
  6. Step 6: Final answer
    x = 29,307.51

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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.