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Finding the Fourth Proportional to 28,083.42, 42,111.02 and 9,356.90

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Solution

The fourth proportional to 28,083.42, 42,111.02 and 9,356.90 is: 14,030.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,083.42 : 42,111.02 = 9,356.90 : x
  2. Step 2: Convert to fraction form
    28,083.42/42,111.02 = 9,356.90/x
  3. Step 3: Cross multiply
    28,083.42x = 42,111.02 × 9,356.90
  4. Step 4: Simplify right side
    28,083.42x = 394,028,415.88
  5. Step 5: Solve for x
    x = 394,028,415.88/28,083.42
  6. Step 6: Final answer
    x = 14,030.64

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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.