Home / 19,290.12-28,932.72-6,143.80

Finding the Fourth Proportional to 19,290.12, 28,932.72 and 6,143.80

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Solution

The fourth proportional to 19,290.12, 28,932.72 and 6,143.80 is: 9,214.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,290.12 : 28,932.72 = 6,143.80 : x
  2. Step 2: Convert to fraction form
    19,290.12/28,932.72 = 6,143.80/x
  3. Step 3: Cross multiply
    19,290.12x = 28,932.72 × 6,143.80
  4. Step 4: Simplify right side
    19,290.12x = 177,756,845.14
  5. Step 5: Solve for x
    x = 177,756,845.14/19,290.12
  6. Step 6: Final answer
    x = 9,214.92

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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.