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Finding the Fourth Proportional to 19,337.60, 28,984.80 and 11,021.60

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Solution

The fourth proportional to 19,337.60, 28,984.80 and 11,021.60 is: 16,520.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,337.60 : 28,984.80 = 11,021.60 : x
  2. Step 2: Convert to fraction form
    19,337.60/28,984.80 = 11,021.60/x
  3. Step 3: Cross multiply
    19,337.60x = 28,984.80 × 11,021.60
  4. Step 4: Simplify right side
    19,337.60x = 319,458,871.68
  5. Step 5: Solve for x
    x = 319,458,871.68/19,337.60
  6. Step 6: Final answer
    x = 16,520.09

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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.