Home / 21,671.82-32,533.64-12,910.86

Finding the Fourth Proportional to 21,671.82, 32,533.64 and 12,910.86

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Solution

The fourth proportional to 21,671.82, 32,533.64 and 12,910.86 is: 19,381.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,671.82 : 32,533.64 = 12,910.86 : x
  2. Step 2: Convert to fraction form
    21,671.82/32,533.64 = 12,910.86/x
  3. Step 3: Cross multiply
    21,671.82x = 32,533.64 × 12,910.86
  4. Step 4: Simplify right side
    21,671.82x = 420,037,140.94
  5. Step 5: Solve for x
    x = 420,037,140.94/21,671.82
  6. Step 6: Final answer
    x = 19,381.72

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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.