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Finding the Fourth Proportional to 28,069.63, 42,111.16 and 9,349.82

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Solution

The fourth proportional to 28,069.63, 42,111.16 and 9,349.82 is: 14,026.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,069.63 : 42,111.16 = 9,349.82 : x
  2. Step 2: Convert to fraction form
    28,069.63/42,111.16 = 9,349.82/x
  3. Step 3: Cross multiply
    28,069.63x = 42,111.16 × 9,349.82
  4. Step 4: Simplify right side
    28,069.63x = 393,731,765.99
  5. Step 5: Solve for x
    x = 393,731,765.99/28,069.63
  6. Step 6: Final answer
    x = 14,026.97

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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.