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Finding the Fourth Proportional to 28,237.64, 38,957.64 and 16,907.48

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Solution

The fourth proportional to 28,237.64, 38,957.64 and 16,907.48 is: 23,326.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,237.64 : 38,957.64 = 16,907.48 : x
  2. Step 2: Convert to fraction form
    28,237.64/38,957.64 = 16,907.48/x
  3. Step 3: Cross multiply
    28,237.64x = 38,957.64 × 16,907.48
  4. Step 4: Simplify right side
    28,237.64x = 658,675,519.15
  5. Step 5: Solve for x
    x = 658,675,519.15/28,237.64
  6. Step 6: Final answer
    x = 23,326.15

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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.