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Finding the Fourth Proportional to 19,176.88, 28,766.88 and 5,325.88

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Solution

The fourth proportional to 19,176.88, 28,766.88 and 5,325.88 is: 7,989.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,176.88 : 28,766.88 = 5,325.88 : x
  2. Step 2: Convert to fraction form
    19,176.88/28,766.88 = 5,325.88/x
  3. Step 3: Cross multiply
    19,176.88x = 28,766.88 × 5,325.88
  4. Step 4: Simplify right side
    19,176.88x = 153,208,950.85
  5. Step 5: Solve for x
    x = 153,208,950.85/19,176.88
  6. Step 6: Final answer
    x = 7,989.25

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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.