Home / 13,431.63-18,529.91-8,392.42

Finding the Fourth Proportional to 13,431.63, 18,529.91 and 8,392.42

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Solution

The fourth proportional to 13,431.63, 18,529.91 and 8,392.42 is: 11,577.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.63 : 18,529.91 = 8,392.42 : x
  2. Step 2: Convert to fraction form
    13,431.63/18,529.91 = 8,392.42/x
  3. Step 3: Cross multiply
    13,431.63x = 18,529.91 × 8,392.42
  4. Step 4: Simplify right side
    13,431.63x = 155,510,799.95
  5. Step 5: Solve for x
    x = 155,510,799.95/13,431.63
  6. Step 6: Final answer
    x = 11,577.95

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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.