Home / 19,145.86-28,718.81-9,286.59

Finding the Fourth Proportional to 19,145.86, 28,718.81 and 9,286.59

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Solution

The fourth proportional to 19,145.86, 28,718.81 and 9,286.59 is: 13,929.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,145.86 : 28,718.81 = 9,286.59 : x
  2. Step 2: Convert to fraction form
    19,145.86/28,718.81 = 9,286.59/x
  3. Step 3: Cross multiply
    19,145.86x = 28,718.81 × 9,286.59
  4. Step 4: Simplify right side
    19,145.86x = 266,699,836.97
  5. Step 5: Solve for x
    x = 266,699,836.97/19,145.86
  6. Step 6: Final answer
    x = 13,929.90

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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.