Home / 30,385.70-45,558.77-12,611.46

Finding the Fourth Proportional to 30,385.70, 45,558.77 and 12,611.46

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Solution

The fourth proportional to 30,385.70, 45,558.77 and 12,611.46 is: 18,908.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,385.70 : 45,558.77 = 12,611.46 : x
  2. Step 2: Convert to fraction form
    30,385.70/45,558.77 = 12,611.46/x
  3. Step 3: Cross multiply
    30,385.70x = 45,558.77 × 12,611.46
  4. Step 4: Simplify right side
    30,385.70x = 574,562,542.45
  5. Step 5: Solve for x
    x = 574,562,542.45/30,385.70
  6. Step 6: Final answer
    x = 18,908.98

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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.