Home / 21,126.42-31,673.23-8,649.59

Finding the Fourth Proportional to 21,126.42, 31,673.23 and 8,649.59

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Solution

The fourth proportional to 21,126.42, 31,673.23 and 8,649.59 is: 12,967.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126.42 : 31,673.23 = 8,649.59 : x
  2. Step 2: Convert to fraction form
    21,126.42/31,673.23 = 8,649.59/x
  3. Step 3: Cross multiply
    21,126.42x = 31,673.23 × 8,649.59
  4. Step 4: Simplify right side
    21,126.42x = 273,960,273.49
  5. Step 5: Solve for x
    x = 273,960,273.49/21,126.42
  6. Step 6: Final answer
    x = 12,967.66

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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.