Home / 20,100.19-27,738.90-11,148.52

Finding the Fourth Proportional to 20,100.19, 27,738.90 and 11,148.52

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Solution

The fourth proportional to 20,100.19, 27,738.90 and 11,148.52 is: 15,385.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.19 : 27,738.90 = 11,148.52 : x
  2. Step 2: Convert to fraction form
    20,100.19/27,738.90 = 11,148.52/x
  3. Step 3: Cross multiply
    20,100.19x = 27,738.90 × 11,148.52
  4. Step 4: Simplify right side
    20,100.19x = 309,247,681.43
  5. Step 5: Solve for x
    x = 309,247,681.43/20,100.19
  6. Step 6: Final answer
    x = 15,385.31

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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.