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Finding the Fourth Proportional to 28,195.98, 42,298.86 and 9,477.86

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Solution

The fourth proportional to 28,195.98, 42,298.86 and 9,477.86 is: 14,218.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,195.98 : 42,298.86 = 9,477.86 : x
  2. Step 2: Convert to fraction form
    28,195.98/42,298.86 = 9,477.86/x
  3. Step 3: Cross multiply
    28,195.98x = 42,298.86 × 9,477.86
  4. Step 4: Simplify right side
    28,195.98x = 400,902,673.24
  5. Step 5: Solve for x
    x = 400,902,673.24/28,195.98
  6. Step 6: Final answer
    x = 14,218.43

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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.