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Finding the Fourth Proportional to 18,950.08, 28,437.42 and 8,561.92

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Solution

The fourth proportional to 18,950.08, 28,437.42 and 8,561.92 is: 12,848.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,950.08 : 28,437.42 = 8,561.92 : x
  2. Step 2: Convert to fraction form
    18,950.08/28,437.42 = 8,561.92/x
  3. Step 3: Cross multiply
    18,950.08x = 28,437.42 × 8,561.92
  4. Step 4: Simplify right side
    18,950.08x = 243,478,915.05
  5. Step 5: Solve for x
    x = 243,478,915.05/18,950.08
  6. Step 6: Final answer
    x = 12,848.44

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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.