Home / 39,300.72-54,234.96-21,395.70

Finding the Fourth Proportional to 39,300.72, 54,234.96 and 21,395.70

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Solution

The fourth proportional to 39,300.72, 54,234.96 and 21,395.70 is: 29,526.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,300.72 : 54,234.96 = 21,395.70 : x
  2. Step 2: Convert to fraction form
    39,300.72/54,234.96 = 21,395.70/x
  3. Step 3: Cross multiply
    39,300.72x = 54,234.96 × 21,395.70
  4. Step 4: Simplify right side
    39,300.72x = 1,160,394,933.67
  5. Step 5: Solve for x
    x = 1,160,394,933.67/39,300.72
  6. Step 6: Final answer
    x = 29,526.05

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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.