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Finding the Fourth Proportional to 19,098.69, 28,642.50 and 8,005.08

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Solution

The fourth proportional to 19,098.69, 28,642.50 and 8,005.08 is: 12,005.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,098.69 : 28,642.50 = 8,005.08 : x
  2. Step 2: Convert to fraction form
    19,098.69/28,642.50 = 8,005.08/x
  3. Step 3: Cross multiply
    19,098.69x = 28,642.50 × 8,005.08
  4. Step 4: Simplify right side
    19,098.69x = 229,285,503.90
  5. Step 5: Solve for x
    x = 229,285,503.90/19,098.69
  6. Step 6: Final answer
    x = 12,005.30

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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.