Home / 21,244.63-31,865.11-9,997.31

Finding the Fourth Proportional to 21,244.63, 31,865.11 and 9,997.31

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Solution

The fourth proportional to 21,244.63, 31,865.11 and 9,997.31 is: 14,995.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,244.63 : 31,865.11 = 9,997.31 : x
  2. Step 2: Convert to fraction form
    21,244.63/31,865.11 = 9,997.31/x
  3. Step 3: Cross multiply
    21,244.63x = 31,865.11 × 9,997.31
  4. Step 4: Simplify right side
    21,244.63x = 318,565,382.85
  5. Step 5: Solve for x
    x = 318,565,382.85/21,244.63
  6. Step 6: Final answer
    x = 14,995.10

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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.