Home / 39,657.72-54,727.22-21,752.66

Finding the Fourth Proportional to 39,657.72, 54,727.22 and 21,752.66

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Solution

The fourth proportional to 39,657.72, 54,727.22 and 21,752.66 is: 30,018.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,657.72 : 54,727.22 = 21,752.66 : x
  2. Step 2: Convert to fraction form
    39,657.72/54,727.22 = 21,752.66/x
  3. Step 3: Cross multiply
    39,657.72x = 54,727.22 × 21,752.66
  4. Step 4: Simplify right side
    39,657.72x = 1,190,462,609.41
  5. Step 5: Solve for x
    x = 1,190,462,609.41/39,657.72
  6. Step 6: Final answer
    x = 30,018.43

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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.