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Finding the Fourth Proportional to 19,485.60, 29,233.80 and 12,924.60

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Solution

The fourth proportional to 19,485.60, 29,233.80 and 12,924.60 is: 19,390.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,485.60 : 29,233.80 = 12,924.60 : x
  2. Step 2: Convert to fraction form
    19,485.60/29,233.80 = 12,924.60/x
  3. Step 3: Cross multiply
    19,485.60x = 29,233.80 × 12,924.60
  4. Step 4: Simplify right side
    19,485.60x = 377,835,171.48
  5. Step 5: Solve for x
    x = 377,835,171.48/19,485.60
  6. Step 6: Final answer
    x = 19,390.48

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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.