Home / 12,919.18-17,823.88-8,445.51

Finding the Fourth Proportional to 12,919.18, 17,823.88 and 8,445.51

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Solution

The fourth proportional to 12,919.18, 17,823.88 and 8,445.51 is: 11,651.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.18 : 17,823.88 = 8,445.51 : x
  2. Step 2: Convert to fraction form
    12,919.18/17,823.88 = 8,445.51/x
  3. Step 3: Cross multiply
    12,919.18x = 17,823.88 × 8,445.51
  4. Step 4: Simplify right side
    12,919.18x = 150,531,756.78
  5. Step 5: Solve for x
    x = 150,531,756.78/12,919.18
  6. Step 6: Final answer
    x = 11,651.80

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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.