Home / 21,330.42-29,433.96-11,899.59

Finding the Fourth Proportional to 21,330.42, 29,433.96 and 11,899.59

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Solution

The fourth proportional to 21,330.42, 29,433.96 and 11,899.59 is: 16,420.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.42 : 29,433.96 = 11,899.59 : x
  2. Step 2: Convert to fraction form
    21,330.42/29,433.96 = 11,899.59/x
  3. Step 3: Cross multiply
    21,330.42x = 29,433.96 × 11,899.59
  4. Step 4: Simplify right side
    21,330.42x = 350,252,056.08
  5. Step 5: Solve for x
    x = 350,252,056.08/21,330.42
  6. Step 6: Final answer
    x = 16,420.31

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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.