Home / 10,764.20-16,148.70-8,431.40

Finding the Fourth Proportional to 10,764.20, 16,148.70 and 8,431.40

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Solution

The fourth proportional to 10,764.20, 16,148.70 and 8,431.40 is: 12,648.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,764.20 : 16,148.70 = 8,431.40 : x
  2. Step 2: Convert to fraction form
    10,764.20/16,148.70 = 8,431.40/x
  3. Step 3: Cross multiply
    10,764.20x = 16,148.70 × 8,431.40
  4. Step 4: Simplify right side
    10,764.20x = 136,156,149.18
  5. Step 5: Solve for x
    x = 136,156,149.18/10,764.20
  6. Step 6: Final answer
    x = 12,648.98

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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.