Home / 30,085.20-45,132.66-9,308.70

Finding the Fourth Proportional to 30,085.20, 45,132.66 and 9,308.70

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Solution

The fourth proportional to 30,085.20, 45,132.66 and 9,308.70 is: 13,964.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,085.20 : 45,132.66 = 9,308.70 : x
  2. Step 2: Convert to fraction form
    30,085.20/45,132.66 = 9,308.70/x
  3. Step 3: Cross multiply
    30,085.20x = 45,132.66 × 9,308.70
  4. Step 4: Simplify right side
    30,085.20x = 420,126,392.14
  5. Step 5: Solve for x
    x = 420,126,392.14/30,085.20
  6. Step 6: Final answer
    x = 13,964.55

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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.