Home / 12,746.67-19,119.60-3,386.40

Finding the Fourth Proportional to 12,746.67, 19,119.60 and 3,386.40

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Solution

The fourth proportional to 12,746.67, 19,119.60 and 3,386.40 is: 5,079.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,746.67 : 19,119.60 = 3,386.40 : x
  2. Step 2: Convert to fraction form
    12,746.67/19,119.60 = 3,386.40/x
  3. Step 3: Cross multiply
    12,746.67x = 19,119.60 × 3,386.40
  4. Step 4: Simplify right side
    12,746.67x = 64,746,613.44
  5. Step 5: Solve for x
    x = 64,746,613.44/12,746.67
  6. Step 6: Final answer
    x = 5,079.49

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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.