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Finding the Fourth Proportional to 18,978.84, 26,225.57 and 16,452.86

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Solution

The fourth proportional to 18,978.84, 26,225.57 and 16,452.86 is: 22,735.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,978.84 : 26,225.57 = 16,452.86 : x
  2. Step 2: Convert to fraction form
    18,978.84/26,225.57 = 16,452.86/x
  3. Step 3: Cross multiply
    18,978.84x = 26,225.57 × 16,452.86
  4. Step 4: Simplify right side
    18,978.84x = 431,485,541.63
  5. Step 5: Solve for x
    x = 431,485,541.63/18,978.84
  6. Step 6: Final answer
    x = 22,735.09

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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.