Home / 13,529.21-18,655.11-8,742.85

Finding the Fourth Proportional to 13,529.21, 18,655.11 and 8,742.85

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Solution

The fourth proportional to 13,529.21, 18,655.11 and 8,742.85 is: 12,055.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,529.21 : 18,655.11 = 8,742.85 : x
  2. Step 2: Convert to fraction form
    13,529.21/18,655.11 = 8,742.85/x
  3. Step 3: Cross multiply
    13,529.21x = 18,655.11 × 8,742.85
  4. Step 4: Simplify right side
    13,529.21x = 163,098,781.83
  5. Step 5: Solve for x
    x = 163,098,781.83/13,529.21
  6. Step 6: Final answer
    x = 12,055.31

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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.