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Finding the Fourth Proportional to 19,019.95, 28,538.87 and 8,489.02

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Solution

The fourth proportional to 19,019.95, 28,538.87 and 8,489.02 is: 12,737.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,019.95 : 28,538.87 = 8,489.02 : x
  2. Step 2: Convert to fraction form
    19,019.95/28,538.87 = 8,489.02/x
  3. Step 3: Cross multiply
    19,019.95x = 28,538.87 × 8,489.02
  4. Step 4: Simplify right side
    19,019.95x = 242,266,893.34
  5. Step 5: Solve for x
    x = 242,266,893.34/19,019.95
  6. Step 6: Final answer
    x = 12,737.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.