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Finding the Fourth Proportional to 30,581.25, 45,878.48 and 9,520.85

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Solution

The fourth proportional to 30,581.25, 45,878.48 and 9,520.85 is: 14,283.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,581.25 : 45,878.48 = 9,520.85 : x
  2. Step 2: Convert to fraction form
    30,581.25/45,878.48 = 9,520.85/x
  3. Step 3: Cross multiply
    30,581.25x = 45,878.48 × 9,520.85
  4. Step 4: Simplify right side
    30,581.25x = 436,801,849.31
  5. Step 5: Solve for x
    x = 436,801,849.31/30,581.25
  6. Step 6: Final answer
    x = 14,283.32

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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.