Home / 39,683.61-54,761.58-21,778.26

Finding the Fourth Proportional to 39,683.61, 54,761.58 and 21,778.26

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Solution

The fourth proportional to 39,683.61, 54,761.58 and 21,778.26 is: 30,053.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,683.61 : 54,761.58 = 21,778.26 : x
  2. Step 2: Convert to fraction form
    39,683.61/54,761.58 = 21,778.26/x
  3. Step 3: Cross multiply
    39,683.61x = 54,761.58 × 21,778.26
  4. Step 4: Simplify right side
    39,683.61x = 1,192,611,927.25
  5. Step 5: Solve for x
    x = 1,192,611,927.25/39,683.61
  6. Step 6: Final answer
    x = 30,053.01

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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.