Home / 21,446.64-29,610.80-13,392.56

Finding the Fourth Proportional to 21,446.64, 29,610.80 and 13,392.56

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Solution

The fourth proportional to 21,446.64, 29,610.80 and 13,392.56 is: 18,490.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,446.64 : 29,610.80 = 13,392.56 : x
  2. Step 2: Convert to fraction form
    21,446.64/29,610.80 = 13,392.56/x
  3. Step 3: Cross multiply
    21,446.64x = 29,610.80 × 13,392.56
  4. Step 4: Simplify right side
    21,446.64x = 396,564,415.65
  5. Step 5: Solve for x
    x = 396,564,415.65/21,446.64
  6. Step 6: Final answer
    x = 18,490.75

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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.