Home / 9,021.60-12,458.40-8,530.80

Finding the Fourth Proportional to 9,021.60, 12,458.40 and 8,530.80

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Solution

The fourth proportional to 9,021.60, 12,458.40 and 8,530.80 is: 11,780.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,021.60 : 12,458.40 = 8,530.80 : x
  2. Step 2: Convert to fraction form
    9,021.60/12,458.40 = 8,530.80/x
  3. Step 3: Cross multiply
    9,021.60x = 12,458.40 × 8,530.80
  4. Step 4: Simplify right side
    9,021.60x = 106,280,118.72
  5. Step 5: Solve for x
    x = 106,280,118.72/9,021.60
  6. Step 6: Final answer
    x = 11,780.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.