Home / 21,392.19-29,507.31-13,427.46

Finding the Fourth Proportional to 21,392.19, 29,507.31 and 13,427.46

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Solution

The fourth proportional to 21,392.19, 29,507.31 and 13,427.46 is: 18,521.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,392.19 : 29,507.31 = 13,427.46 : x
  2. Step 2: Convert to fraction form
    21,392.19/29,507.31 = 13,427.46/x
  3. Step 3: Cross multiply
    21,392.19x = 29,507.31 × 13,427.46
  4. Step 4: Simplify right side
    21,392.19x = 396,208,224.73
  5. Step 5: Solve for x
    x = 396,208,224.73/21,392.19
  6. Step 6: Final answer
    x = 18,521.16

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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.