Home / 19,118.90-28,682.40-5,790.80

Finding the Fourth Proportional to 19,118.90, 28,682.40 and 5,790.80

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Solution

The fourth proportional to 19,118.90, 28,682.40 and 5,790.80 is: 8,687.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,118.90 : 28,682.40 = 5,790.80 : x
  2. Step 2: Convert to fraction form
    19,118.90/28,682.40 = 5,790.80/x
  3. Step 3: Cross multiply
    19,118.90x = 28,682.40 × 5,790.80
  4. Step 4: Simplify right side
    19,118.90x = 166,094,041.92
  5. Step 5: Solve for x
    x = 166,094,041.92/19,118.90
  6. Step 6: Final answer
    x = 8,687.43

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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.