Home / 20,440.34-28,206.79-11,942.93

Finding the Fourth Proportional to 20,440.34, 28,206.79 and 11,942.93

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Solution

The fourth proportional to 20,440.34, 28,206.79 and 11,942.93 is: 16,480.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.34 : 28,206.79 = 11,942.93 : x
  2. Step 2: Convert to fraction form
    20,440.34/28,206.79 = 11,942.93/x
  3. Step 3: Cross multiply
    20,440.34x = 28,206.79 × 11,942.93
  4. Step 4: Simplify right side
    20,440.34x = 336,871,718.49
  5. Step 5: Solve for x
    x = 336,871,718.49/20,440.34
  6. Step 6: Final answer
    x = 16,480.73

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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.