Home / 13,111.96-19,655.16-8,418.84

Finding the Fourth Proportional to 13,111.96, 19,655.16 and 8,418.84

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Solution

The fourth proportional to 13,111.96, 19,655.16 and 8,418.84 is: 12,620.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,111.96 : 19,655.16 = 8,418.84 : x
  2. Step 2: Convert to fraction form
    13,111.96/19,655.16 = 8,418.84/x
  3. Step 3: Cross multiply
    13,111.96x = 19,655.16 × 8,418.84
  4. Step 4: Simplify right side
    13,111.96x = 165,473,647.21
  5. Step 5: Solve for x
    x = 165,473,647.21/13,111.96
  6. Step 6: Final answer
    x = 12,620.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.