Home / 12,785.84-19,160.12-5,661.48

Finding the Fourth Proportional to 12,785.84, 19,160.12 and 5,661.48

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Solution

The fourth proportional to 12,785.84, 19,160.12 and 5,661.48 is: 8,483.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,785.84 : 19,160.12 = 5,661.48 : x
  2. Step 2: Convert to fraction form
    12,785.84/19,160.12 = 5,661.48/x
  3. Step 3: Cross multiply
    12,785.84x = 19,160.12 × 5,661.48
  4. Step 4: Simplify right side
    12,785.84x = 108,474,636.18
  5. Step 5: Solve for x
    x = 108,474,636.18/12,785.84
  6. Step 6: Final answer
    x = 8,483.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.