Home / 14,310.30-21,404.70-12,840.15

Finding the Fourth Proportional to 14,310.30, 21,404.70 and 12,840.15

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Solution

The fourth proportional to 14,310.30, 21,404.70 and 12,840.15 is: 19,205.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,310.30 : 21,404.70 = 12,840.15 : x
  2. Step 2: Convert to fraction form
    14,310.30/21,404.70 = 12,840.15/x
  3. Step 3: Cross multiply
    14,310.30x = 21,404.70 × 12,840.15
  4. Step 4: Simplify right side
    14,310.30x = 274,839,558.71
  5. Step 5: Solve for x
    x = 274,839,558.71/14,310.30
  6. Step 6: Final answer
    x = 19,205.72

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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.