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Finding the Fourth Proportional to 28,625.60, 42,945.66 and 8,904.30

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Solution

The fourth proportional to 28,625.60, 42,945.66 and 8,904.30 is: 13,358.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,625.60 : 42,945.66 = 8,904.30 : x
  2. Step 2: Convert to fraction form
    28,625.60/42,945.66 = 8,904.30/x
  3. Step 3: Cross multiply
    28,625.60x = 42,945.66 × 8,904.30
  4. Step 4: Simplify right side
    28,625.60x = 382,401,040.34
  5. Step 5: Solve for x
    x = 382,401,040.34/28,625.60
  6. Step 6: Final answer
    x = 13,358.71

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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.