Home / 21,073.02-31,609.26-6,279.72

Finding the Fourth Proportional to 21,073.02, 31,609.26 and 6,279.72

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Solution

The fourth proportional to 21,073.02, 31,609.26 and 6,279.72 is: 9,419.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,073.02 : 31,609.26 = 6,279.72 : x
  2. Step 2: Convert to fraction form
    21,073.02/31,609.26 = 6,279.72/x
  3. Step 3: Cross multiply
    21,073.02x = 31,609.26 × 6,279.72
  4. Step 4: Simplify right side
    21,073.02x = 198,497,302.21
  5. Step 5: Solve for x
    x = 198,497,302.21/21,073.02
  6. Step 6: Final answer
    x = 9,419.50

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Similar ratio
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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.