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Finding the Fourth Proportional to 28,028.67, 42,043.16 and 8,307.40

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Solution

The fourth proportional to 28,028.67, 42,043.16 and 8,307.40 is: 12,461.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.67 : 42,043.16 = 8,307.40 : x
  2. Step 2: Convert to fraction form
    28,028.67/42,043.16 = 8,307.40/x
  3. Step 3: Cross multiply
    28,028.67x = 42,043.16 × 8,307.40
  4. Step 4: Simplify right side
    28,028.67x = 349,269,305.85
  5. Step 5: Solve for x
    x = 349,269,305.85/28,028.67
  6. Step 6: Final answer
    x = 12,461.14

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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.