Home / 12,630.91-18,950.58-8,430.96

Finding the Fourth Proportional to 12,630.91, 18,950.58 and 8,430.96

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Solution

The fourth proportional to 12,630.91, 18,950.58 and 8,430.96 is: 12,649.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.91 : 18,950.58 = 8,430.96 : x
  2. Step 2: Convert to fraction form
    12,630.91/18,950.58 = 8,430.96/x
  3. Step 3: Cross multiply
    12,630.91x = 18,950.58 × 8,430.96
  4. Step 4: Simplify right side
    12,630.91x = 159,771,623.44
  5. Step 5: Solve for x
    x = 159,771,623.44/12,630.91
  6. Step 6: Final answer
    x = 12,649.25

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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.