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Finding the Fourth Proportional to 12,913.58, 17,800.53 and 8,435.09

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Solution

The fourth proportional to 12,913.58, 17,800.53 and 8,435.09 is: 11,627.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913.58 : 17,800.53 = 8,435.09 : x
  2. Step 2: Convert to fraction form
    12,913.58/17,800.53 = 8,435.09/x
  3. Step 3: Cross multiply
    12,913.58x = 17,800.53 × 8,435.09
  4. Step 4: Simplify right side
    12,913.58x = 150,149,085.47
  5. Step 5: Solve for x
    x = 150,149,085.47/12,913.58
  6. Step 6: Final answer
    x = 11,627.22

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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.