Home / 19,109.93-28,653.75-7,409.48

Finding the Fourth Proportional to 19,109.93, 28,653.75 and 7,409.48

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Solution

The fourth proportional to 19,109.93, 28,653.75 and 7,409.48 is: 11,109.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,109.93 : 28,653.75 = 7,409.48 : x
  2. Step 2: Convert to fraction form
    19,109.93/28,653.75 = 7,409.48/x
  3. Step 3: Cross multiply
    19,109.93x = 28,653.75 × 7,409.48
  4. Step 4: Simplify right side
    19,109.93x = 212,309,244.28
  5. Step 5: Solve for x
    x = 212,309,244.28/19,109.93
  6. Step 6: Final answer
    x = 11,109.89

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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.