Home / 21,217.16-31,777.30-10,131.63

Finding the Fourth Proportional to 21,217.16, 31,777.30 and 10,131.63

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Solution

The fourth proportional to 21,217.16, 31,777.30 and 10,131.63 is: 15,174.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.16 : 31,777.30 = 10,131.63 : x
  2. Step 2: Convert to fraction form
    21,217.16/31,777.30 = 10,131.63/x
  3. Step 3: Cross multiply
    21,217.16x = 31,777.30 × 10,131.63
  4. Step 4: Simplify right side
    21,217.16x = 321,955,846.00
  5. Step 5: Solve for x
    x = 321,955,846.00/21,217.16
  6. Step 6: Final answer
    x = 15,174.31

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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.