Home / 30,457.50-45,692.97-12,942.30

Finding the Fourth Proportional to 30,457.50, 45,692.97 and 12,942.30

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Solution

The fourth proportional to 30,457.50, 45,692.97 and 12,942.30 is: 19,416.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,457.50 : 45,692.97 = 12,942.30 : x
  2. Step 2: Convert to fraction form
    30,457.50/45,692.97 = 12,942.30/x
  3. Step 3: Cross multiply
    30,457.50x = 45,692.97 × 12,942.30
  4. Step 4: Simplify right side
    30,457.50x = 591,372,125.63
  5. Step 5: Solve for x
    x = 591,372,125.63/30,457.50
  6. Step 6: Final answer
    x = 19,416.31

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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.