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Finding the Fourth Proportional to 14,144.31, 21,349.40 and 14,144.31

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Solution

The fourth proportional to 14,144.31, 21,349.40 and 14,144.31 is: 21,349.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,144.31 : 21,349.40 = 14,144.31 : x
  2. Step 2: Convert to fraction form
    14,144.31/21,349.40 = 14,144.31/x
  3. Step 3: Cross multiply
    14,144.31x = 21,349.40 × 14,144.31
  4. Step 4: Simplify right side
    14,144.31x = 301,972,461.19
  5. Step 5: Solve for x
    x = 301,972,461.19/14,144.31
  6. Step 6: Final answer
    x = 21,349.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.