Home / 12,919.49-17,820.56-8,884.47

Finding the Fourth Proportional to 12,919.49, 17,820.56 and 8,884.47

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Solution

The fourth proportional to 12,919.49, 17,820.56 and 8,884.47 is: 12,254.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.49 : 17,820.56 = 8,884.47 : x
  2. Step 2: Convert to fraction form
    12,919.49/17,820.56 = 8,884.47/x
  3. Step 3: Cross multiply
    12,919.49x = 17,820.56 × 8,884.47
  4. Step 4: Simplify right side
    12,919.49x = 158,326,252.91
  5. Step 5: Solve for x
    x = 158,326,252.91/12,919.49
  6. Step 6: Final answer
    x = 12,254.84

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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.