Home / 14,586.15-20,128.55-8,920.96

Finding the Fourth Proportional to 14,586.15, 20,128.55 and 8,920.96

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Solution

The fourth proportional to 14,586.15, 20,128.55 and 8,920.96 is: 12,310.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,586.15 : 20,128.55 = 8,920.96 : x
  2. Step 2: Convert to fraction form
    14,586.15/20,128.55 = 8,920.96/x
  3. Step 3: Cross multiply
    14,586.15x = 20,128.55 × 8,920.96
  4. Step 4: Simplify right side
    14,586.15x = 179,565,944.80
  5. Step 5: Solve for x
    x = 179,565,944.80/14,586.15
  6. Step 6: Final answer
    x = 12,310.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.