Home / 19,115.92-28,656.76-7,426.36

Finding the Fourth Proportional to 19,115.92, 28,656.76 and 7,426.36

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Solution

The fourth proportional to 19,115.92, 28,656.76 and 7,426.36 is: 11,132.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,115.92 : 28,656.76 = 7,426.36 : x
  2. Step 2: Convert to fraction form
    19,115.92/28,656.76 = 7,426.36/x
  3. Step 3: Cross multiply
    19,115.92x = 28,656.76 × 7,426.36
  4. Step 4: Simplify right side
    19,115.92x = 212,815,416.19
  5. Step 5: Solve for x
    x = 212,815,416.19/19,115.92
  6. Step 6: Final answer
    x = 11,132.89

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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.