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Finding the Fourth Proportional to 19,080.92, 28,619.93 and 9,715.07

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Solution

The fourth proportional to 19,080.92, 28,619.93 and 9,715.07 is: 14,571.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,080.92 : 28,619.93 = 9,715.07 : x
  2. Step 2: Convert to fraction form
    19,080.92/28,619.93 = 9,715.07/x
  3. Step 3: Cross multiply
    19,080.92x = 28,619.93 × 9,715.07
  4. Step 4: Simplify right side
    19,080.92x = 278,044,504.53
  5. Step 5: Solve for x
    x = 278,044,504.53/19,080.92
  6. Step 6: Final answer
    x = 14,571.86

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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.