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Finding the Fourth Proportional to 28,076.70, 42,114.96 and 19,284.96

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Solution

The fourth proportional to 28,076.70, 42,114.96 and 19,284.96 is: 28,927.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,076.70 : 42,114.96 = 19,284.96 : x
  2. Step 2: Convert to fraction form
    28,076.70/42,114.96 = 19,284.96/x
  3. Step 3: Cross multiply
    28,076.70x = 42,114.96 × 19,284.96
  4. Step 4: Simplify right side
    28,076.70x = 812,185,319.00
  5. Step 5: Solve for x
    x = 812,185,319.00/28,076.70
  6. Step 6: Final answer
    x = 28,927.38

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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.