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Finding the Fourth Proportional to 19,173.92, 28,724.67 and 9,819.86

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Solution

The fourth proportional to 19,173.92, 28,724.67 and 9,819.86 is: 14,711.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,173.92 : 28,724.67 = 9,819.86 : x
  2. Step 2: Convert to fraction form
    19,173.92/28,724.67 = 9,819.86/x
  3. Step 3: Cross multiply
    19,173.92x = 28,724.67 × 9,819.86
  4. Step 4: Simplify right side
    19,173.92x = 282,072,094.32
  5. Step 5: Solve for x
    x = 282,072,094.32/19,173.92
  6. Step 6: Final answer
    x = 14,711.24

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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.