Home / 28,284.32-42,431.70-9,310.02

Finding the Fourth Proportional to 28,284.32, 42,431.70 and 9,310.02

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Solution

The fourth proportional to 28,284.32, 42,431.70 and 9,310.02 is: 13,966.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,284.32 : 42,431.70 = 9,310.02 : x
  2. Step 2: Convert to fraction form
    28,284.32/42,431.70 = 9,310.02/x
  3. Step 3: Cross multiply
    28,284.32x = 42,431.70 × 9,310.02
  4. Step 4: Simplify right side
    28,284.32x = 395,039,975.63
  5. Step 5: Solve for x
    x = 395,039,975.63/28,284.32
  6. Step 6: Final answer
    x = 13,966.75

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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.