Home / 12,076.57-16,661.75-7,830.94

Finding the Fourth Proportional to 12,076.57, 16,661.75 and 7,830.94

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Solution

The fourth proportional to 12,076.57, 16,661.75 and 7,830.94 is: 10,804.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,076.57 : 16,661.75 = 7,830.94 : x
  2. Step 2: Convert to fraction form
    12,076.57/16,661.75 = 7,830.94/x
  3. Step 3: Cross multiply
    12,076.57x = 16,661.75 × 7,830.94
  4. Step 4: Simplify right side
    12,076.57x = 130,477,182.46
  5. Step 5: Solve for x
    x = 130,477,182.46/12,076.57
  6. Step 6: Final answer
    x = 10,804.16

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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.