Home / 16,986.15-25,479.23-12,612.15

Finding the Fourth Proportional to 16,986.15, 25,479.23 and 12,612.15

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Solution

The fourth proportional to 16,986.15, 25,479.23 and 12,612.15 is: 18,918.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,986.15 : 25,479.23 = 12,612.15 : x
  2. Step 2: Convert to fraction form
    16,986.15/25,479.23 = 12,612.15/x
  3. Step 3: Cross multiply
    16,986.15x = 25,479.23 × 12,612.15
  4. Step 4: Simplify right side
    16,986.15x = 321,347,807.58
  5. Step 5: Solve for x
    x = 321,347,807.58/16,986.15
  6. Step 6: Final answer
    x = 18,918.23

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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.