Home / 19,788.48-27,309.42-11,405.52

Finding the Fourth Proportional to 19,788.48, 27,309.42 and 11,405.52

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Solution

The fourth proportional to 19,788.48, 27,309.42 and 11,405.52 is: 15,740.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,788.48 : 27,309.42 = 11,405.52 : x
  2. Step 2: Convert to fraction form
    19,788.48/27,309.42 = 11,405.52/x
  3. Step 3: Cross multiply
    19,788.48x = 27,309.42 × 11,405.52
  4. Step 4: Simplify right side
    19,788.48x = 311,478,136.00
  5. Step 5: Solve for x
    x = 311,478,136.00/19,788.48
  6. Step 6: Final answer
    x = 15,740.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.