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Finding the Fourth Proportional to 19,259.63, 28,891.08 and 5,408.63

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Solution

The fourth proportional to 19,259.63, 28,891.08 and 5,408.63 is: 8,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,259.63 : 28,891.08 = 5,408.63 : x
  2. Step 2: Convert to fraction form
    19,259.63/28,891.08 = 5,408.63/x
  3. Step 3: Cross multiply
    19,259.63x = 28,891.08 × 5,408.63
  4. Step 4: Simplify right side
    19,259.63x = 156,261,162.02
  5. Step 5: Solve for x
    x = 156,261,162.02/19,259.63
  6. Step 6: Final answer
    x = 8,113.40

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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.