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Finding the Fourth Proportional to 18,921.50, 26,068.20 and 14,941.16

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Solution

The fourth proportional to 18,921.50, 26,068.20 and 14,941.16 is: 20,584.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.50 : 26,068.20 = 14,941.16 : x
  2. Step 2: Convert to fraction form
    18,921.50/26,068.20 = 14,941.16/x
  3. Step 3: Cross multiply
    18,921.50x = 26,068.20 × 14,941.16
  4. Step 4: Simplify right side
    18,921.50x = 389,489,147.11
  5. Step 5: Solve for x
    x = 389,489,147.11/18,921.50
  6. Step 6: Final answer
    x = 20,584.48

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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.