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Finding the Fourth Proportional to 28,370.86, 42,559.02 and 9,644.67

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Solution

The fourth proportional to 28,370.86, 42,559.02 and 9,644.67 is: 14,467.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.86 : 42,559.02 = 9,644.67 : x
  2. Step 2: Convert to fraction form
    28,370.86/42,559.02 = 9,644.67/x
  3. Step 3: Cross multiply
    28,370.86x = 42,559.02 × 9,644.67
  4. Step 4: Simplify right side
    28,370.86x = 410,467,703.42
  5. Step 5: Solve for x
    x = 410,467,703.42/28,370.86
  6. Step 6: Final answer
    x = 14,467.93

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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.