Home / 19,697.42-27,212.07-12,907.57

Finding the Fourth Proportional to 19,697.42, 27,212.07 and 12,907.57

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Solution

The fourth proportional to 19,697.42, 27,212.07 and 12,907.57 is: 17,831.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,697.42 : 27,212.07 = 12,907.57 : x
  2. Step 2: Convert to fraction form
    19,697.42/27,212.07 = 12,907.57/x
  3. Step 3: Cross multiply
    19,697.42x = 27,212.07 × 12,907.57
  4. Step 4: Simplify right side
    19,697.42x = 351,241,803.05
  5. Step 5: Solve for x
    x = 351,241,803.05/19,697.42
  6. Step 6: Final answer
    x = 17,831.87

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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.