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Finding the Fourth Proportional to 19,000, 26,220 and 10,616.50

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Solution

The fourth proportional to 19,000, 26,220 and 10,616.50 is: 14,650.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,000 : 26,220 = 10,616.50 : x
  2. Step 2: Convert to fraction form
    19,000/26,220 = 10,616.50/x
  3. Step 3: Cross multiply
    19,000x = 26,220 × 10,616.50
  4. Step 4: Simplify right side
    19,000x = 278,364,630
  5. Step 5: Solve for x
    x = 278,364,630/19,000
  6. Step 6: Final answer
    x = 14,650.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.