Home / 29,965.60-41,368.08-21,890.19

Finding the Fourth Proportional to 29,965.60, 41,368.08 and 21,890.19

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Solution

The fourth proportional to 29,965.60, 41,368.08 and 21,890.19 is: 30,219.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,965.60 : 41,368.08 = 21,890.19 : x
  2. Step 2: Convert to fraction form
    29,965.60/41,368.08 = 21,890.19/x
  3. Step 3: Cross multiply
    29,965.60x = 41,368.08 × 21,890.19
  4. Step 4: Simplify right side
    29,965.60x = 905,555,049.05
  5. Step 5: Solve for x
    x = 905,555,049.05/29,965.60
  6. Step 6: Final answer
    x = 30,219.82

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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.