Home / 18,825.40-28,238.84-5,677.77

Finding the Fourth Proportional to 18,825.40, 28,238.84 and 5,677.77

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Solution

The fourth proportional to 18,825.40, 28,238.84 and 5,677.77 is: 8,516.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.40 : 28,238.84 = 5,677.77 : x
  2. Step 2: Convert to fraction form
    18,825.40/28,238.84 = 5,677.77/x
  3. Step 3: Cross multiply
    18,825.40x = 28,238.84 × 5,677.77
  4. Step 4: Simplify right side
    18,825.40x = 160,333,665.95
  5. Step 5: Solve for x
    x = 160,333,665.95/18,825.40
  6. Step 6: Final answer
    x = 8,516.88

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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.