Home / 21,410.24-29,548.32-13,458.56

Finding the Fourth Proportional to 21,410.24, 29,548.32 and 13,458.56

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Solution

The fourth proportional to 21,410.24, 29,548.32 and 13,458.56 is: 18,574.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,410.24 : 29,548.32 = 13,458.56 : x
  2. Step 2: Convert to fraction form
    21,410.24/29,548.32 = 13,458.56/x
  3. Step 3: Cross multiply
    21,410.24x = 29,548.32 × 13,458.56
  4. Step 4: Simplify right side
    21,410.24x = 397,677,837.62
  5. Step 5: Solve for x
    x = 397,677,837.62/21,410.24
  6. Step 6: Final answer
    x = 18,574.19

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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.