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Finding the Fourth Proportional to 19,029.54, 28,543.77 and 8,509.26

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Solution

The fourth proportional to 19,029.54, 28,543.77 and 8,509.26 is: 12,763.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,029.54 : 28,543.77 = 8,509.26 : x
  2. Step 2: Convert to fraction form
    19,029.54/28,543.77 = 8,509.26/x
  3. Step 3: Cross multiply
    19,029.54x = 28,543.77 × 8,509.26
  4. Step 4: Simplify right side
    19,029.54x = 242,886,360.31
  5. Step 5: Solve for x
    x = 242,886,360.31/19,029.54
  6. Step 6: Final answer
    x = 12,763.65

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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.