Home / 13,826.21-20,651.18-12,507.93

Finding the Fourth Proportional to 13,826.21, 20,651.18 and 12,507.93

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Solution

The fourth proportional to 13,826.21, 20,651.18 and 12,507.93 is: 18,682.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,826.21 : 20,651.18 = 12,507.93 : x
  2. Step 2: Convert to fraction form
    13,826.21/20,651.18 = 12,507.93/x
  3. Step 3: Cross multiply
    13,826.21x = 20,651.18 × 12,507.93
  4. Step 4: Simplify right side
    13,826.21x = 258,303,451.32
  5. Step 5: Solve for x
    x = 258,303,451.32/13,826.21
  6. Step 6: Final answer
    x = 18,682.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.