Home / 19,161.84-28,704.36-8,759.28

Finding the Fourth Proportional to 19,161.84, 28,704.36 and 8,759.28

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Solution

The fourth proportional to 19,161.84, 28,704.36 and 8,759.28 is: 13,121.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,161.84 : 28,704.36 = 8,759.28 : x
  2. Step 2: Convert to fraction form
    19,161.84/28,704.36 = 8,759.28/x
  3. Step 3: Cross multiply
    19,161.84x = 28,704.36 × 8,759.28
  4. Step 4: Simplify right side
    19,161.84x = 251,429,526.46
  5. Step 5: Solve for x
    x = 251,429,526.46/19,161.84
  6. Step 6: Final answer
    x = 13,121.37

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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.