Home / 21,179.04-29,232.81-13,216.56

Finding the Fourth Proportional to 21,179.04, 29,232.81 and 13,216.56

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Solution

The fourth proportional to 21,179.04, 29,232.81 and 13,216.56 is: 18,242.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.04 : 29,232.81 = 13,216.56 : x
  2. Step 2: Convert to fraction form
    21,179.04/29,232.81 = 13,216.56/x
  3. Step 3: Cross multiply
    21,179.04x = 29,232.81 × 13,216.56
  4. Step 4: Simplify right side
    21,179.04x = 386,357,187.33
  5. Step 5: Solve for x
    x = 386,357,187.33/21,179.04
  6. Step 6: Final answer
    x = 18,242.43

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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.