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Finding the Fourth Proportional to 19,108.70, 28,657.50 and 8,015.08

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Solution

The fourth proportional to 19,108.70, 28,657.50 and 8,015.08 is: 12,020.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,108.70 : 28,657.50 = 8,015.08 : x
  2. Step 2: Convert to fraction form
    19,108.70/28,657.50 = 8,015.08/x
  3. Step 3: Cross multiply
    19,108.70x = 28,657.50 × 8,015.08
  4. Step 4: Simplify right side
    19,108.70x = 229,692,155.10
  5. Step 5: Solve for x
    x = 229,692,155.10/19,108.70
  6. Step 6: Final answer
    x = 12,020.29

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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.