Home / 39,146.10-54,020.13-21,240.73

Finding the Fourth Proportional to 39,146.10, 54,020.13 and 21,240.73

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Solution

The fourth proportional to 39,146.10, 54,020.13 and 21,240.73 is: 29,311.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,146.10 : 54,020.13 = 21,240.73 : x
  2. Step 2: Convert to fraction form
    39,146.10/54,020.13 = 21,240.73/x
  3. Step 3: Cross multiply
    39,146.10x = 54,020.13 × 21,240.73
  4. Step 4: Simplify right side
    39,146.10x = 1,147,426,995.89
  5. Step 5: Solve for x
    x = 1,147,426,995.89/39,146.10
  6. Step 6: Final answer
    x = 29,311.40

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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.