Home / 21,279.03-29,365.27-11,847.80

Finding the Fourth Proportional to 21,279.03, 29,365.27 and 11,847.80

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Solution

The fourth proportional to 21,279.03, 29,365.27 and 11,847.80 is: 16,350.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,279.03 : 29,365.27 = 11,847.80 : x
  2. Step 2: Convert to fraction form
    21,279.03/29,365.27 = 11,847.80/x
  3. Step 3: Cross multiply
    21,279.03x = 29,365.27 × 11,847.80
  4. Step 4: Simplify right side
    21,279.03x = 347,913,639.84
  5. Step 5: Solve for x
    x = 347,913,639.84/21,279.03
  6. Step 6: Final answer
    x = 16,350.07

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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.