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Finding the Fourth Proportional to 28,099.94, 38,699.44 and 23,340.78

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Solution

The fourth proportional to 28,099.94, 38,699.44 and 23,340.78 is: 32,145.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,099.94 : 38,699.44 = 23,340.78 : x
  2. Step 2: Convert to fraction form
    28,099.94/38,699.44 = 23,340.78/x
  3. Step 3: Cross multiply
    28,099.94x = 38,699.44 × 23,340.78
  4. Step 4: Simplify right side
    28,099.94x = 903,275,056.81
  5. Step 5: Solve for x
    x = 903,275,056.81/28,099.94
  6. Step 6: Final answer
    x = 32,145.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.