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Finding the Fourth Proportional to 19,483.60, 29,230.80 and 12,922.60

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Solution

The fourth proportional to 19,483.60, 29,230.80 and 12,922.60 is: 19,387.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,483.60 : 29,230.80 = 12,922.60 : x
  2. Step 2: Convert to fraction form
    19,483.60/29,230.80 = 12,922.60/x
  3. Step 3: Cross multiply
    19,483.60x = 29,230.80 × 12,922.60
  4. Step 4: Simplify right side
    19,483.60x = 377,737,936.08
  5. Step 5: Solve for x
    x = 377,737,936.08/19,483.60
  6. Step 6: Final answer
    x = 19,387.48

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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.