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Finding the Fourth Proportional to 19,000.56, 28,510.56 and 8,610.96

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Solution

The fourth proportional to 19,000.56, 28,510.56 and 8,610.96 is: 12,920.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,000.56 : 28,510.56 = 8,610.96 : x
  2. Step 2: Convert to fraction form
    19,000.56/28,510.56 = 8,610.96/x
  3. Step 3: Cross multiply
    19,000.56x = 28,510.56 × 8,610.96
  4. Step 4: Simplify right side
    19,000.56x = 245,503,291.74
  5. Step 5: Solve for x
    x = 245,503,291.74/19,000.56
  6. Step 6: Final answer
    x = 12,920.85

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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.