Home / 12,746.48-19,122.12-3,979.28

Finding the Fourth Proportional to 12,746.48, 19,122.12 and 3,979.28

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Solution

The fourth proportional to 12,746.48, 19,122.12 and 3,979.28 is: 5,969.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,746.48 : 19,122.12 = 3,979.28 : x
  2. Step 2: Convert to fraction form
    12,746.48/19,122.12 = 3,979.28/x
  3. Step 3: Cross multiply
    12,746.48x = 19,122.12 × 3,979.28
  4. Step 4: Simplify right side
    12,746.48x = 76,092,269.67
  5. Step 5: Solve for x
    x = 76,092,269.67/12,746.48
  6. Step 6: Final answer
    x = 5,969.67

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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.