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Finding the Fourth Proportional to 18,912.52, 26,080.50 and 14,925.64

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Solution

The fourth proportional to 18,912.52, 26,080.50 and 14,925.64 is: 20,582.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.52 : 26,080.50 = 14,925.64 : x
  2. Step 2: Convert to fraction form
    18,912.52/26,080.50 = 14,925.64/x
  3. Step 3: Cross multiply
    18,912.52x = 26,080.50 × 14,925.64
  4. Step 4: Simplify right side
    18,912.52x = 389,268,154.02
  5. Step 5: Solve for x
    x = 389,268,154.02/18,912.52
  6. Step 6: Final answer
    x = 20,582.56

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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.