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Finding the Fourth Proportional to 28,934.35, 43,401.21 and 21,957.21

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Solution

The fourth proportional to 28,934.35, 43,401.21 and 21,957.21 is: 32,935.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,934.35 : 43,401.21 = 21,957.21 : x
  2. Step 2: Convert to fraction form
    28,934.35/43,401.21 = 21,957.21/x
  3. Step 3: Cross multiply
    28,934.35x = 43,401.21 × 21,957.21
  4. Step 4: Simplify right side
    28,934.35x = 952,969,482.22
  5. Step 5: Solve for x
    x = 952,969,482.22/28,934.35
  6. Step 6: Final answer
    x = 32,935.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.