Home / 12,818.53-17,689.54-7,153.22

Finding the Fourth Proportional to 12,818.53, 17,689.54 and 7,153.22

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Solution

The fourth proportional to 12,818.53, 17,689.54 and 7,153.22 is: 9,871.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.53 : 17,689.54 = 7,153.22 : x
  2. Step 2: Convert to fraction form
    12,818.53/17,689.54 = 7,153.22/x
  3. Step 3: Cross multiply
    12,818.53x = 17,689.54 × 7,153.22
  4. Step 4: Simplify right side
    12,818.53x = 126,537,181.44
  5. Step 5: Solve for x
    x = 126,537,181.44/12,818.53
  6. Step 6: Final answer
    x = 9,871.42

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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.