Home / 28,254.75-42,389.69-9,786.75

Finding the Fourth Proportional to 28,254.75, 42,389.69 and 9,786.75

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Solution

The fourth proportional to 28,254.75, 42,389.69 and 9,786.75 is: 14,682.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,254.75 : 42,389.69 = 9,786.75 : x
  2. Step 2: Convert to fraction form
    28,254.75/42,389.69 = 9,786.75/x
  3. Step 3: Cross multiply
    28,254.75x = 42,389.69 × 9,786.75
  4. Step 4: Simplify right side
    28,254.75x = 414,857,249.67
  5. Step 5: Solve for x
    x = 414,857,249.67/28,254.75
  6. Step 6: Final answer
    x = 14,682.74

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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.