Home / 39,143.30-54,017.98-21,238.34

Finding the Fourth Proportional to 39,143.30, 54,017.98 and 21,238.34

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Solution

The fourth proportional to 39,143.30, 54,017.98 and 21,238.34 is: 29,309.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,143.30 : 54,017.98 = 21,238.34 : x
  2. Step 2: Convert to fraction form
    39,143.30/54,017.98 = 21,238.34/x
  3. Step 3: Cross multiply
    39,143.30x = 54,017.98 × 21,238.34
  4. Step 4: Simplify right side
    39,143.30x = 1,147,252,225.35
  5. Step 5: Solve for x
    x = 1,147,252,225.35/39,143.30
  6. Step 6: Final answer
    x = 29,309.03

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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.