Home / 13,137.18-19,686.24-12,811.14

Finding the Fourth Proportional to 13,137.18, 19,686.24 and 12,811.14

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Solution

The fourth proportional to 13,137.18, 19,686.24 and 12,811.14 is: 19,197.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.18 : 19,686.24 = 12,811.14 : x
  2. Step 2: Convert to fraction form
    13,137.18/19,686.24 = 12,811.14/x
  3. Step 3: Cross multiply
    13,137.18x = 19,686.24 × 12,811.14
  4. Step 4: Simplify right side
    13,137.18x = 252,203,176.71
  5. Step 5: Solve for x
    x = 252,203,176.71/13,137.18
  6. Step 6: Final answer
    x = 19,197.66

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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.