Home / 12,811.16-19,209.74-5,782.92

Finding the Fourth Proportional to 12,811.16, 19,209.74 and 5,782.92

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Solution

The fourth proportional to 12,811.16, 19,209.74 and 5,782.92 is: 8,671.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,811.16 : 19,209.74 = 5,782.92 : x
  2. Step 2: Convert to fraction form
    12,811.16/19,209.74 = 5,782.92/x
  3. Step 3: Cross multiply
    12,811.16x = 19,209.74 × 5,782.92
  4. Step 4: Simplify right side
    12,811.16x = 111,088,360.73
  5. Step 5: Solve for x
    x = 111,088,360.73/12,811.16
  6. Step 6: Final answer
    x = 8,671.22

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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.