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Finding the Fourth Proportional to 20,526.48, 30,786.48 and 8,677.80

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Solution

The fourth proportional to 20,526.48, 30,786.48 and 8,677.80 is: 13,015.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,526.48 : 30,786.48 = 8,677.80 : x
  2. Step 2: Convert to fraction form
    20,526.48/30,786.48 = 8,677.80/x
  3. Step 3: Cross multiply
    20,526.48x = 30,786.48 × 8,677.80
  4. Step 4: Simplify right side
    20,526.48x = 267,158,916.14
  5. Step 5: Solve for x
    x = 267,158,916.14/20,526.48
  6. Step 6: Final answer
    x = 13,015.33

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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.