Home / 21,610.64-29,826.96-13,648.88

Finding the Fourth Proportional to 21,610.64, 29,826.96 and 13,648.88

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Solution

The fourth proportional to 21,610.64, 29,826.96 and 13,648.88 is: 18,838.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,610.64 : 29,826.96 = 13,648.88 : x
  2. Step 2: Convert to fraction form
    21,610.64/29,826.96 = 13,648.88/x
  3. Step 3: Cross multiply
    21,610.64x = 29,826.96 × 13,648.88
  4. Step 4: Simplify right side
    21,610.64x = 407,104,597.80
  5. Step 5: Solve for x
    x = 407,104,597.80/21,610.64
  6. Step 6: Final answer
    x = 18,838.16

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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.