Home / 12,513.18-18,771.18-4,193.79

Finding the Fourth Proportional to 12,513.18, 18,771.18 and 4,193.79

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Solution

The fourth proportional to 12,513.18, 18,771.18 and 4,193.79 is: 6,291.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,513.18 : 18,771.18 = 4,193.79 : x
  2. Step 2: Convert to fraction form
    12,513.18/18,771.18 = 4,193.79/x
  3. Step 3: Cross multiply
    12,513.18x = 18,771.18 × 4,193.79
  4. Step 4: Simplify right side
    12,513.18x = 78,722,386.97
  5. Step 5: Solve for x
    x = 78,722,386.97/12,513.18
  6. Step 6: Final answer
    x = 6,291.16

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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.