Home / 20,232.45-27,908.75-15,749.10

Finding the Fourth Proportional to 20,232.45, 27,908.75 and 15,749.10

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Solution

The fourth proportional to 20,232.45, 27,908.75 and 15,749.10 is: 21,724.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,232.45 : 27,908.75 = 15,749.10 : x
  2. Step 2: Convert to fraction form
    20,232.45/27,908.75 = 15,749.10/x
  3. Step 3: Cross multiply
    20,232.45x = 27,908.75 × 15,749.10
  4. Step 4: Simplify right side
    20,232.45x = 439,537,734.00
  5. Step 5: Solve for x
    x = 439,537,734.00/20,232.45
  6. Step 6: Final answer
    x = 21,724.39

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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.