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Finding the Fourth Proportional to 28,525.92, 42,794.24 and 12,944.64

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Solution

The fourth proportional to 28,525.92, 42,794.24 and 12,944.64 is: 19,419.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,525.92 : 42,794.24 = 12,944.64 : x
  2. Step 2: Convert to fraction form
    28,525.92/42,794.24 = 12,944.64/x
  3. Step 3: Cross multiply
    28,525.92x = 42,794.24 × 12,944.64
  4. Step 4: Simplify right side
    28,525.92x = 553,956,030.87
  5. Step 5: Solve for x
    x = 553,956,030.87/28,525.92
  6. Step 6: Final answer
    x = 19,419.39

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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.