Home / 16,786.12-25,130.56-12,643.56

Finding the Fourth Proportional to 16,786.12, 25,130.56 and 12,643.56

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Solution

The fourth proportional to 16,786.12, 25,130.56 and 12,643.56 is: 18,928.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,786.12 : 25,130.56 = 12,643.56 : x
  2. Step 2: Convert to fraction form
    16,786.12/25,130.56 = 12,643.56/x
  3. Step 3: Cross multiply
    16,786.12x = 25,130.56 × 12,643.56
  4. Step 4: Simplify right side
    16,786.12x = 317,739,743.19
  5. Step 5: Solve for x
    x = 317,739,743.19/16,786.12
  6. Step 6: Final answer
    x = 18,928.72

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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.