Home / 14,138.86-21,205.68-5,371.66

Finding the Fourth Proportional to 14,138.86, 21,205.68 and 5,371.66

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Solution

The fourth proportional to 14,138.86, 21,205.68 and 5,371.66 is: 8,056.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.86 : 21,205.68 = 5,371.66 : x
  2. Step 2: Convert to fraction form
    14,138.86/21,205.68 = 5,371.66/x
  3. Step 3: Cross multiply
    14,138.86x = 21,205.68 × 5,371.66
  4. Step 4: Simplify right side
    14,138.86x = 113,909,703.03
  5. Step 5: Solve for x
    x = 113,909,703.03/14,138.86
  6. Step 6: Final answer
    x = 8,056.50

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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.