Home / 28,107.84-42,167.16-12,525.42

Finding the Fourth Proportional to 28,107.84, 42,167.16 and 12,525.42

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Solution

The fourth proportional to 28,107.84, 42,167.16 and 12,525.42 is: 18,790.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107.84 : 42,167.16 = 12,525.42 : x
  2. Step 2: Convert to fraction form
    28,107.84/42,167.16 = 12,525.42/x
  3. Step 3: Cross multiply
    28,107.84x = 42,167.16 × 12,525.42
  4. Step 4: Simplify right side
    28,107.84x = 528,161,389.21
  5. Step 5: Solve for x
    x = 528,161,389.21/28,107.84
  6. Step 6: Final answer
    x = 18,790.54

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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.