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Finding the Fourth Proportional to 14,241.40, 21,311.70 and 12,412.60

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Solution

The fourth proportional to 14,241.40, 21,311.70 and 12,412.60 is: 18,574.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,241.40 : 21,311.70 = 12,412.60 : x
  2. Step 2: Convert to fraction form
    14,241.40/21,311.70 = 12,412.60/x
  3. Step 3: Cross multiply
    14,241.40x = 21,311.70 × 12,412.60
  4. Step 4: Simplify right side
    14,241.40x = 264,533,607.42
  5. Step 5: Solve for x
    x = 264,533,607.42/14,241.40
  6. Step 6: Final answer
    x = 18,574.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.