Home / 30,354.20-45,531.30-9,579.80

Finding the Fourth Proportional to 30,354.20, 45,531.30 and 9,579.80

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Solution

The fourth proportional to 30,354.20, 45,531.30 and 9,579.80 is: 14,369.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,354.20 : 45,531.30 = 9,579.80 : x
  2. Step 2: Convert to fraction form
    30,354.20/45,531.30 = 9,579.80/x
  3. Step 3: Cross multiply
    30,354.20x = 45,531.30 × 9,579.80
  4. Step 4: Simplify right side
    30,354.20x = 436,180,747.74
  5. Step 5: Solve for x
    x = 436,180,747.74/30,354.20
  6. Step 6: Final answer
    x = 14,369.70

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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.