Home / 12,416.60-18,603.30-8,031.80

Finding the Fourth Proportional to 12,416.60, 18,603.30 and 8,031.80

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Solution

The fourth proportional to 12,416.60, 18,603.30 and 8,031.80 is: 12,033.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,416.60 : 18,603.30 = 8,031.80 : x
  2. Step 2: Convert to fraction form
    12,416.60/18,603.30 = 8,031.80/x
  3. Step 3: Cross multiply
    12,416.60x = 18,603.30 × 8,031.80
  4. Step 4: Simplify right side
    12,416.60x = 149,417,984.94
  5. Step 5: Solve for x
    x = 149,417,984.94/12,416.60
  6. Step 6: Final answer
    x = 12,033.73

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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.