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Finding the Fourth Proportional to 38,657.80, 57,986.70 and 26,369.80

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Solution

The fourth proportional to 38,657.80, 57,986.70 and 26,369.80 is: 39,554.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,657.80 : 57,986.70 = 26,369.80 : x
  2. Step 2: Convert to fraction form
    38,657.80/57,986.70 = 26,369.80/x
  3. Step 3: Cross multiply
    38,657.80x = 57,986.70 × 26,369.80
  4. Step 4: Simplify right side
    38,657.80x = 1,529,097,681.66
  5. Step 5: Solve for x
    x = 1,529,097,681.66/38,657.80
  6. Step 6: Final answer
    x = 39,554.70

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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.