Home / 12,945.29-19,417.91-4,180.19

Finding the Fourth Proportional to 12,945.29, 19,417.91 and 4,180.19

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Solution

The fourth proportional to 12,945.29, 19,417.91 and 4,180.19 is: 6,270.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.29 : 19,417.91 = 4,180.19 : x
  2. Step 2: Convert to fraction form
    12,945.29/19,417.91 = 4,180.19/x
  3. Step 3: Cross multiply
    12,945.29x = 19,417.91 × 4,180.19
  4. Step 4: Simplify right side
    12,945.29x = 81,170,435.21
  5. Step 5: Solve for x
    x = 81,170,435.21/12,945.29
  6. Step 6: Final answer
    x = 6,270.27

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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.