Home / 21,224.18-29,262.36-13,263.50

Finding the Fourth Proportional to 21,224.18, 29,262.36 and 13,263.50

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Solution

The fourth proportional to 21,224.18, 29,262.36 and 13,263.50 is: 18,286.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,224.18 : 29,262.36 = 13,263.50 : x
  2. Step 2: Convert to fraction form
    21,224.18/29,262.36 = 13,263.50/x
  3. Step 3: Cross multiply
    21,224.18x = 29,262.36 × 13,263.50
  4. Step 4: Simplify right side
    21,224.18x = 388,121,311.86
  5. Step 5: Solve for x
    x = 388,121,311.86/21,224.18
  6. Step 6: Final answer
    x = 18,286.75

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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.