Home / 30,216.80-41,655.89-21,236.43

Finding the Fourth Proportional to 30,216.80, 41,655.89 and 21,236.43

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Solution

The fourth proportional to 30,216.80, 41,655.89 and 21,236.43 is: 29,275.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,216.80 : 41,655.89 = 21,236.43 : x
  2. Step 2: Convert to fraction form
    30,216.80/41,655.89 = 21,236.43/x
  3. Step 3: Cross multiply
    30,216.80x = 41,655.89 × 21,236.43
  4. Step 4: Simplify right side
    30,216.80x = 884,622,488.81
  5. Step 5: Solve for x
    x = 884,622,488.81/30,216.80
  6. Step 6: Final answer
    x = 29,275.85

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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.