Home / 21,431.17-32,148.78-8,283.25

Finding the Fourth Proportional to 21,431.17, 32,148.78 and 8,283.25

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Solution

The fourth proportional to 21,431.17, 32,148.78 and 8,283.25 is: 12,425.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.17 : 32,148.78 = 8,283.25 : x
  2. Step 2: Convert to fraction form
    21,431.17/32,148.78 = 8,283.25/x
  3. Step 3: Cross multiply
    21,431.17x = 32,148.78 × 8,283.25
  4. Step 4: Simplify right side
    21,431.17x = 266,296,381.94
  5. Step 5: Solve for x
    x = 266,296,381.94/21,431.17
  6. Step 6: Final answer
    x = 12,425.66

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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.