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Finding the Fourth Proportional to 18,825.60, 25,926.72 and 18,417.44

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Solution

The fourth proportional to 18,825.60, 25,926.72 and 18,417.44 is: 25,364.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.60 : 25,926.72 = 18,417.44 : x
  2. Step 2: Convert to fraction form
    18,825.60/25,926.72 = 18,417.44/x
  3. Step 3: Cross multiply
    18,825.60x = 25,926.72 × 18,417.44
  4. Step 4: Simplify right side
    18,825.60x = 477,503,810.00
  5. Step 5: Solve for x
    x = 477,503,810.00/18,825.60
  6. Step 6: Final answer
    x = 25,364.60

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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.