Home / 12,878.08-17,768.72-9,335.14

Finding the Fourth Proportional to 12,878.08, 17,768.72 and 9,335.14

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Solution

The fourth proportional to 12,878.08, 17,768.72 and 9,335.14 is: 12,880.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878.08 : 17,768.72 = 9,335.14 : x
  2. Step 2: Convert to fraction form
    12,878.08/17,768.72 = 9,335.14/x
  3. Step 3: Cross multiply
    12,878.08x = 17,768.72 × 9,335.14
  4. Step 4: Simplify right side
    12,878.08x = 165,873,467.74
  5. Step 5: Solve for x
    x = 165,873,467.74/12,878.08
  6. Step 6: Final answer
    x = 12,880.30

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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.