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Finding the Fourth Proportional to 28,759.74, 39,706.62 and 22,032.88

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Solution

The fourth proportional to 28,759.74, 39,706.62 and 22,032.88 is: 30,419.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,759.74 : 39,706.62 = 22,032.88 : x
  2. Step 2: Convert to fraction form
    28,759.74/39,706.62 = 22,032.88/x
  3. Step 3: Cross multiply
    28,759.74x = 39,706.62 × 22,032.88
  4. Step 4: Simplify right side
    28,759.74x = 874,851,193.67
  5. Step 5: Solve for x
    x = 874,851,193.67/28,759.74
  6. Step 6: Final answer
    x = 30,419.30

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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.