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Finding the Fourth Proportional to 19,205.54, 28,808.30 and 5,354.54

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Solution

The fourth proportional to 19,205.54, 28,808.30 and 5,354.54 is: 8,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,205.54 : 28,808.30 = 5,354.54 : x
  2. Step 2: Convert to fraction form
    19,205.54/28,808.30 = 5,354.54/x
  3. Step 3: Cross multiply
    19,205.54x = 28,808.30 × 5,354.54
  4. Step 4: Simplify right side
    19,205.54x = 154,255,023.87
  5. Step 5: Solve for x
    x = 154,255,023.87/19,205.54
  6. Step 6: Final answer
    x = 8,031.80

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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.