Home / 13,966.86-20,891.70-12,917.10

Finding the Fourth Proportional to 13,966.86, 20,891.70 and 12,917.10

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Solution

The fourth proportional to 13,966.86, 20,891.70 and 12,917.10 is: 19,321.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,966.86 : 20,891.70 = 12,917.10 : x
  2. Step 2: Convert to fraction form
    13,966.86/20,891.70 = 12,917.10/x
  3. Step 3: Cross multiply
    13,966.86x = 20,891.70 × 12,917.10
  4. Step 4: Simplify right side
    13,966.86x = 269,860,178.07
  5. Step 5: Solve for x
    x = 269,860,178.07/13,966.86
  6. Step 6: Final answer
    x = 19,321.46

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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.