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Finding the Fourth Proportional to 25,651.64, 38,490.77 and 19,409.79

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Solution

The fourth proportional to 25,651.64, 38,490.77 and 19,409.79 is: 29,124.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,651.64 : 38,490.77 = 19,409.79 : x
  2. Step 2: Convert to fraction form
    25,651.64/38,490.77 = 19,409.79/x
  3. Step 3: Cross multiply
    25,651.64x = 38,490.77 × 19,409.79
  4. Step 4: Simplify right side
    25,651.64x = 747,097,811.16
  5. Step 5: Solve for x
    x = 747,097,811.16/25,651.64
  6. Step 6: Final answer
    x = 29,124.76

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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.