Home / 20,097.54-27,735.28-12,138.18

Finding the Fourth Proportional to 20,097.54, 27,735.28 and 12,138.18

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Solution

The fourth proportional to 20,097.54, 27,735.28 and 12,138.18 is: 16,751.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,097.54 : 27,735.28 = 12,138.18 : x
  2. Step 2: Convert to fraction form
    20,097.54/27,735.28 = 12,138.18/x
  3. Step 3: Cross multiply
    20,097.54x = 27,735.28 × 12,138.18
  4. Step 4: Simplify right side
    20,097.54x = 336,655,820.99
  5. Step 5: Solve for x
    x = 336,655,820.99/20,097.54
  6. Step 6: Final answer
    x = 16,751.10

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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.