Home / 20,634.57-28,475.69-11,203.07

Finding the Fourth Proportional to 20,634.57, 28,475.69 and 11,203.07

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Solution

The fourth proportional to 20,634.57, 28,475.69 and 11,203.07 is: 15,460.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.57 : 28,475.69 = 11,203.07 : x
  2. Step 2: Convert to fraction form
    20,634.57/28,475.69 = 11,203.07/x
  3. Step 3: Cross multiply
    20,634.57x = 28,475.69 × 11,203.07
  4. Step 4: Simplify right side
    20,634.57x = 319,014,949.97
  5. Step 5: Solve for x
    x = 319,014,949.97/20,634.57
  6. Step 6: Final answer
    x = 15,460.22

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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.