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Finding the Fourth Proportional to 19,329.30, 28,999.35 and 8,241.30

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Solution

The fourth proportional to 19,329.30, 28,999.35 and 8,241.30 is: 12,364.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,329.30 : 28,999.35 = 8,241.30 : x
  2. Step 2: Convert to fraction form
    19,329.30/28,999.35 = 8,241.30/x
  3. Step 3: Cross multiply
    19,329.30x = 28,999.35 × 8,241.30
  4. Step 4: Simplify right side
    19,329.30x = 238,992,343.16
  5. Step 5: Solve for x
    x = 238,992,343.16/19,329.30
  6. Step 6: Final answer
    x = 12,364.25

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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.