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Finding the Fourth Proportional to 25,786.60, 38,679.93 and 7,066.80

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Solution

The fourth proportional to 25,786.60, 38,679.93 and 7,066.80 is: 10,600.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,786.60 : 38,679.93 = 7,066.80 : x
  2. Step 2: Convert to fraction form
    25,786.60/38,679.93 = 7,066.80/x
  3. Step 3: Cross multiply
    25,786.60x = 38,679.93 × 7,066.80
  4. Step 4: Simplify right side
    25,786.60x = 273,343,329.32
  5. Step 5: Solve for x
    x = 273,343,329.32/25,786.60
  6. Step 6: Final answer
    x = 10,600.21

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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.