Home / 28,031.67-42,047.10-8,310.60

Finding the Fourth Proportional to 28,031.67, 42,047.10 and 8,310.60

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Solution

The fourth proportional to 28,031.67, 42,047.10 and 8,310.60 is: 12,465.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,031.67 : 42,047.10 = 8,310.60 : x
  2. Step 2: Convert to fraction form
    28,031.67/42,047.10 = 8,310.60/x
  3. Step 3: Cross multiply
    28,031.67x = 42,047.10 × 8,310.60
  4. Step 4: Simplify right side
    28,031.67x = 349,436,629.26
  5. Step 5: Solve for x
    x = 349,436,629.26/28,031.67
  6. Step 6: Final answer
    x = 12,465.78

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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.