Home / 21,229.86-29,301.84-13,277.28

Finding the Fourth Proportional to 21,229.86, 29,301.84 and 13,277.28

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Solution

The fourth proportional to 21,229.86, 29,301.84 and 13,277.28 is: 18,325.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.86 : 29,301.84 = 13,277.28 : x
  2. Step 2: Convert to fraction form
    21,229.86/29,301.84 = 13,277.28/x
  3. Step 3: Cross multiply
    21,229.86x = 29,301.84 × 13,277.28
  4. Step 4: Simplify right side
    21,229.86x = 389,048,734.20
  5. Step 5: Solve for x
    x = 389,048,734.20/21,229.86
  6. Step 6: Final answer
    x = 18,325.54

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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.