Home / 21,241.40-29,311.08-12,287.12

Finding the Fourth Proportional to 21,241.40, 29,311.08 and 12,287.12

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Solution

The fourth proportional to 21,241.40, 29,311.08 and 12,287.12 is: 16,955.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,241.40 : 29,311.08 = 12,287.12 : x
  2. Step 2: Convert to fraction form
    21,241.40/29,311.08 = 12,287.12/x
  3. Step 3: Cross multiply
    21,241.40x = 29,311.08 × 12,287.12
  4. Step 4: Simplify right side
    21,241.40x = 360,148,757.29
  5. Step 5: Solve for x
    x = 360,148,757.29/21,241.40
  6. Step 6: Final answer
    x = 16,955.04

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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.