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Finding the Fourth Proportional to 13,685.01, 18,884.19 and 8,019.01

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Solution

The fourth proportional to 13,685.01, 18,884.19 and 8,019.01 is: 11,065.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.01 : 18,884.19 = 8,019.01 : x
  2. Step 2: Convert to fraction form
    13,685.01/18,884.19 = 8,019.01/x
  3. Step 3: Cross multiply
    13,685.01x = 18,884.19 × 8,019.01
  4. Step 4: Simplify right side
    13,685.01x = 151,432,508.45
  5. Step 5: Solve for x
    x = 151,432,508.45/13,685.01
  6. Step 6: Final answer
    x = 11,065.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.