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Finding the Fourth Proportional to 19,008.99, 28,511.06 and 7,913.61

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Solution

The fourth proportional to 19,008.99, 28,511.06 and 7,913.61 is: 11,869.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,008.99 : 28,511.06 = 7,913.61 : x
  2. Step 2: Convert to fraction form
    19,008.99/28,511.06 = 7,913.61/x
  3. Step 3: Cross multiply
    19,008.99x = 28,511.06 × 7,913.61
  4. Step 4: Simplify right side
    19,008.99x = 225,625,369.96
  5. Step 5: Solve for x
    x = 225,625,369.96/19,008.99
  6. Step 6: Final answer
    x = 11,869.40

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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.