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Finding the Fourth Proportional to 28,003.61, 41,989.88 and 11,119.50

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Solution

The fourth proportional to 28,003.61, 41,989.88 and 11,119.50 is: 16,673.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003.61 : 41,989.88 = 11,119.50 : x
  2. Step 2: Convert to fraction form
    28,003.61/41,989.88 = 11,119.50/x
  3. Step 3: Cross multiply
    28,003.61x = 41,989.88 × 11,119.50
  4. Step 4: Simplify right side
    28,003.61x = 466,906,415.06
  5. Step 5: Solve for x
    x = 466,906,415.06/28,003.61
  6. Step 6: Final answer
    x = 16,673.08

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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.