Home / 21,208.86-29,267.46-11,648.70

Finding the Fourth Proportional to 21,208.86, 29,267.46 and 11,648.70

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Solution

The fourth proportional to 21,208.86, 29,267.46 and 11,648.70 is: 16,074.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.86 : 29,267.46 = 11,648.70 : x
  2. Step 2: Convert to fraction form
    21,208.86/29,267.46 = 11,648.70/x
  3. Step 3: Cross multiply
    21,208.86x = 29,267.46 × 11,648.70
  4. Step 4: Simplify right side
    21,208.86x = 340,927,861.30
  5. Step 5: Solve for x
    x = 340,927,861.30/21,208.86
  6. Step 6: Final answer
    x = 16,074.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.