Home / 12,818.24-17,683.80-8,340.56

Finding the Fourth Proportional to 12,818.24, 17,683.80 and 8,340.56

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Solution

The fourth proportional to 12,818.24, 17,683.80 and 8,340.56 is: 11,506.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.24 : 17,683.80 = 8,340.56 : x
  2. Step 2: Convert to fraction form
    12,818.24/17,683.80 = 8,340.56/x
  3. Step 3: Cross multiply
    12,818.24x = 17,683.80 × 8,340.56
  4. Step 4: Simplify right side
    12,818.24x = 147,492,794.93
  5. Step 5: Solve for x
    x = 147,492,794.93/12,818.24
  6. Step 6: Final answer
    x = 11,506.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.