Home / 21,108.56-31,673.68-9,429.44

Finding the Fourth Proportional to 21,108.56, 31,673.68 and 9,429.44

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Solution

The fourth proportional to 21,108.56, 31,673.68 and 9,429.44 is: 14,149.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,108.56 : 31,673.68 = 9,429.44 : x
  2. Step 2: Convert to fraction form
    21,108.56/31,673.68 = 9,429.44/x
  3. Step 3: Cross multiply
    21,108.56x = 31,673.68 × 9,429.44
  4. Step 4: Simplify right side
    21,108.56x = 298,665,065.14
  5. Step 5: Solve for x
    x = 298,665,065.14/21,108.56
  6. Step 6: Final answer
    x = 14,149.00

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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.