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Finding the Fourth Proportional to 28,575.88, 42,690.02 and 18,498.52

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Solution

The fourth proportional to 28,575.88, 42,690.02 and 18,498.52 is: 27,635.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,575.88 : 42,690.02 = 18,498.52 : x
  2. Step 2: Convert to fraction form
    28,575.88/42,690.02 = 18,498.52/x
  3. Step 3: Cross multiply
    28,575.88x = 42,690.02 × 18,498.52
  4. Step 4: Simplify right side
    28,575.88x = 789,702,188.77
  5. Step 5: Solve for x
    x = 789,702,188.77/28,575.88
  6. Step 6: Final answer
    x = 27,635.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.