Home / 18,934.99-28,405.86-7,835.65

Finding the Fourth Proportional to 18,934.99, 28,405.86 and 7,835.65

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Solution

The fourth proportional to 18,934.99, 28,405.86 and 7,835.65 is: 11,754.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,934.99 : 28,405.86 = 7,835.65 : x
  2. Step 2: Convert to fraction form
    18,934.99/28,405.86 = 7,835.65/x
  3. Step 3: Cross multiply
    18,934.99x = 28,405.86 × 7,835.65
  4. Step 4: Simplify right side
    18,934.99x = 222,578,376.91
  5. Step 5: Solve for x
    x = 222,578,376.91/18,934.99
  6. Step 6: Final answer
    x = 11,754.87

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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.