Home / 13,851.96-19,113.16-8,187.63

Finding the Fourth Proportional to 13,851.96, 19,113.16 and 8,187.63

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Solution

The fourth proportional to 13,851.96, 19,113.16 and 8,187.63 is: 11,297.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,851.96 : 19,113.16 = 8,187.63 : x
  2. Step 2: Convert to fraction form
    13,851.96/19,113.16 = 8,187.63/x
  3. Step 3: Cross multiply
    13,851.96x = 19,113.16 × 8,187.63
  4. Step 4: Simplify right side
    13,851.96x = 156,491,482.21
  5. Step 5: Solve for x
    x = 156,491,482.21/13,851.96
  6. Step 6: Final answer
    x = 11,297.43

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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.