Home / 9,308.40-13,930.20-8,530.80

Finding the Fourth Proportional to 9,308.40, 13,930.20 and 8,530.80

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Solution

The fourth proportional to 9,308.40, 13,930.20 and 8,530.80 is: 12,766.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,308.40 : 13,930.20 = 8,530.80 : x
  2. Step 2: Convert to fraction form
    9,308.40/13,930.20 = 8,530.80/x
  3. Step 3: Cross multiply
    9,308.40x = 13,930.20 × 8,530.80
  4. Step 4: Simplify right side
    9,308.40x = 118,835,750.16
  5. Step 5: Solve for x
    x = 118,835,750.16/9,308.40
  6. Step 6: Final answer
    x = 12,766.51

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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.