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Finding the Fourth Proportional to 13,925.64, 20,856.04 and 8,366.71

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Solution

The fourth proportional to 13,925.64, 20,856.04 and 8,366.71 is: 12,530.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,925.64 : 20,856.04 = 8,366.71 : x
  2. Step 2: Convert to fraction form
    13,925.64/20,856.04 = 8,366.71/x
  3. Step 3: Cross multiply
    13,925.64x = 20,856.04 × 8,366.71
  4. Step 4: Simplify right side
    13,925.64x = 174,496,438.43
  5. Step 5: Solve for x
    x = 174,496,438.43/13,925.64
  6. Step 6: Final answer
    x = 12,530.59

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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.