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Finding the Fourth Proportional to 38,040.86, 57,074.80 and 16,978.98

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Solution

The fourth proportional to 38,040.86, 57,074.80 and 16,978.98 is: 25,474.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,040.86 : 57,074.80 = 16,978.98 : x
  2. Step 2: Convert to fraction form
    38,040.86/57,074.80 = 16,978.98/x
  3. Step 3: Cross multiply
    38,040.86x = 57,074.80 × 16,978.98
  4. Step 4: Simplify right side
    38,040.86x = 969,071,887.70
  5. Step 5: Solve for x
    x = 969,071,887.70/38,040.86
  6. Step 6: Final answer
    x = 25,474.50

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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.