Home / 28,272.40-42,408.60-8,564.80

Finding the Fourth Proportional to 28,272.40, 42,408.60 and 8,564.80

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Solution

The fourth proportional to 28,272.40, 42,408.60 and 8,564.80 is: 12,847.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,272.40 : 42,408.60 = 8,564.80 : x
  2. Step 2: Convert to fraction form
    28,272.40/42,408.60 = 8,564.80/x
  3. Step 3: Cross multiply
    28,272.40x = 42,408.60 × 8,564.80
  4. Step 4: Simplify right side
    28,272.40x = 363,221,177.28
  5. Step 5: Solve for x
    x = 363,221,177.28/28,272.40
  6. Step 6: Final answer
    x = 12,847.20

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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.