Home / 30,758.88-46,144.76-12,989.59

Finding the Fourth Proportional to 30,758.88, 46,144.76 and 12,989.59

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Solution

The fourth proportional to 30,758.88, 46,144.76 and 12,989.59 is: 19,487.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,758.88 : 46,144.76 = 12,989.59 : x
  2. Step 2: Convert to fraction form
    30,758.88/46,144.76 = 12,989.59/x
  3. Step 3: Cross multiply
    30,758.88x = 46,144.76 × 12,989.59
  4. Step 4: Simplify right side
    30,758.88x = 599,401,592.30
  5. Step 5: Solve for x
    x = 599,401,592.30/30,758.88
  6. Step 6: Final answer
    x = 19,487.11

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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.