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Finding the Fourth Proportional to 28,311.94, 42,465.42 and 9,591.58

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Solution

The fourth proportional to 28,311.94, 42,465.42 and 9,591.58 is: 14,386.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,311.94 : 42,465.42 = 9,591.58 : x
  2. Step 2: Convert to fraction form
    28,311.94/42,465.42 = 9,591.58/x
  3. Step 3: Cross multiply
    28,311.94x = 42,465.42 × 9,591.58
  4. Step 4: Simplify right side
    28,311.94x = 407,310,473.16
  5. Step 5: Solve for x
    x = 407,310,473.16/28,311.94
  6. Step 6: Final answer
    x = 14,386.53

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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.