Home / 19,120.85-28,680.36-7,277.33

Finding the Fourth Proportional to 19,120.85, 28,680.36 and 7,277.33

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Solution

The fourth proportional to 19,120.85, 28,680.36 and 7,277.33 is: 10,915.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,120.85 : 28,680.36 = 7,277.33 : x
  2. Step 2: Convert to fraction form
    19,120.85/28,680.36 = 7,277.33/x
  3. Step 3: Cross multiply
    19,120.85x = 28,680.36 × 7,277.33
  4. Step 4: Simplify right side
    19,120.85x = 208,716,444.24
  5. Step 5: Solve for x
    x = 208,716,444.24/19,120.85
  6. Step 6: Final answer
    x = 10,915.65

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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.