Home / 18,710.28-28,068.80-5,382.64

Finding the Fourth Proportional to 18,710.28, 28,068.80 and 5,382.64

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Solution

The fourth proportional to 18,710.28, 28,068.80 and 5,382.64 is: 8,074.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.28 : 28,068.80 = 5,382.64 : x
  2. Step 2: Convert to fraction form
    18,710.28/28,068.80 = 5,382.64/x
  3. Step 3: Cross multiply
    18,710.28x = 28,068.80 × 5,382.64
  4. Step 4: Simplify right side
    18,710.28x = 151,084,245.63
  5. Step 5: Solve for x
    x = 151,084,245.63/18,710.28
  6. Step 6: Final answer
    x = 8,074.93

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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.