Home / 25,781.10-35,550.93-19,080.78

Finding the Fourth Proportional to 25,781.10, 35,550.93 and 19,080.78

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Solution

The fourth proportional to 25,781.10, 35,550.93 and 19,080.78 is: 26,311.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,781.10 : 35,550.93 = 19,080.78 : x
  2. Step 2: Convert to fraction form
    25,781.10/35,550.93 = 19,080.78/x
  3. Step 3: Cross multiply
    25,781.10x = 35,550.93 × 19,080.78
  4. Step 4: Simplify right side
    25,781.10x = 678,339,474.13
  5. Step 5: Solve for x
    x = 678,339,474.13/25,781.10
  6. Step 6: Final answer
    x = 26,311.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.