Home / 12,515.80-18,767.70-4,612.90

Finding the Fourth Proportional to 12,515.80, 18,767.70 and 4,612.90

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Solution

The fourth proportional to 12,515.80, 18,767.70 and 4,612.90 is: 6,917.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,515.80 : 18,767.70 = 4,612.90 : x
  2. Step 2: Convert to fraction form
    12,515.80/18,767.70 = 4,612.90/x
  3. Step 3: Cross multiply
    12,515.80x = 18,767.70 × 4,612.90
  4. Step 4: Simplify right side
    12,515.80x = 86,573,523.33
  5. Step 5: Solve for x
    x = 86,573,523.33/12,515.80
  6. Step 6: Final answer
    x = 6,917.14

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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.