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Finding the Fourth Proportional to 19,220.88, 28,830.24 and 6,741.48

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Solution

The fourth proportional to 19,220.88, 28,830.24 and 6,741.48 is: 10,111.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,220.88 : 28,830.24 = 6,741.48 : x
  2. Step 2: Convert to fraction form
    19,220.88/28,830.24 = 6,741.48/x
  3. Step 3: Cross multiply
    19,220.88x = 28,830.24 × 6,741.48
  4. Step 4: Simplify right side
    19,220.88x = 194,358,486.36
  5. Step 5: Solve for x
    x = 194,358,486.36/19,220.88
  6. Step 6: Final answer
    x = 10,111.84

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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.