Home / 12,945.03-19,417.60-3,939.23

Finding the Fourth Proportional to 12,945.03, 19,417.60 and 3,939.23

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Solution

The fourth proportional to 12,945.03, 19,417.60 and 3,939.23 is: 5,908.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.03 : 19,417.60 = 3,939.23 : x
  2. Step 2: Convert to fraction form
    12,945.03/19,417.60 = 3,939.23/x
  3. Step 3: Cross multiply
    12,945.03x = 19,417.60 × 3,939.23
  4. Step 4: Simplify right side
    12,945.03x = 76,490,460.17
  5. Step 5: Solve for x
    x = 76,490,460.17/12,945.03
  6. Step 6: Final answer
    x = 5,908.87

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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.