Home / 19,128.68-28,692.78-5,277.32

Finding the Fourth Proportional to 19,128.68, 28,692.78 and 5,277.32

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Solution

The fourth proportional to 19,128.68, 28,692.78 and 5,277.32 is: 7,915.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.68 : 28,692.78 = 5,277.32 : x
  2. Step 2: Convert to fraction form
    19,128.68/28,692.78 = 5,277.32/x
  3. Step 3: Cross multiply
    19,128.68x = 28,692.78 × 5,277.32
  4. Step 4: Simplify right side
    19,128.68x = 151,420,981.75
  5. Step 5: Solve for x
    x = 151,420,981.75/19,128.68
  6. Step 6: Final answer
    x = 7,915.91

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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.