Home / 19,019.58-28,528.56-4,979.38

Finding the Fourth Proportional to 19,019.58, 28,528.56 and 4,979.38

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Solution

The fourth proportional to 19,019.58, 28,528.56 and 4,979.38 is: 7,468.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,019.58 : 28,528.56 = 4,979.38 : x
  2. Step 2: Convert to fraction form
    19,019.58/28,528.56 = 4,979.38/x
  3. Step 3: Cross multiply
    19,019.58x = 28,528.56 × 4,979.38
  4. Step 4: Simplify right side
    19,019.58x = 142,054,541.09
  5. Step 5: Solve for x
    x = 142,054,541.09/19,019.58
  6. Step 6: Final answer
    x = 7,468.86

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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.