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Finding the Fourth Proportional to 28,051.65, 42,086.21 and 8,330.31

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Solution

The fourth proportional to 28,051.65, 42,086.21 and 8,330.31 is: 12,498.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,051.65 : 42,086.21 = 8,330.31 : x
  2. Step 2: Convert to fraction form
    28,051.65/42,086.21 = 8,330.31/x
  3. Step 3: Cross multiply
    28,051.65x = 42,086.21 × 8,330.31
  4. Step 4: Simplify right side
    28,051.65x = 350,591,134.37
  5. Step 5: Solve for x
    x = 350,591,134.37/28,051.65
  6. Step 6: Final answer
    x = 12,498.06

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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.