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Finding the Fourth Proportional to 19,113.20, 28,677.88 and 9,259.80

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Solution

The fourth proportional to 19,113.20, 28,677.88 and 9,259.80 is: 13,893.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,113.20 : 28,677.88 = 9,259.80 : x
  2. Step 2: Convert to fraction form
    19,113.20/28,677.88 = 9,259.80/x
  3. Step 3: Cross multiply
    19,113.20x = 28,677.88 × 9,259.80
  4. Step 4: Simplify right side
    19,113.20x = 265,551,433.22
  5. Step 5: Solve for x
    x = 265,551,433.22/19,113.20
  6. Step 6: Final answer
    x = 13,893.61

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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.