Home / 13,582.40-20,385.60-8,028.80

Finding the Fourth Proportional to 13,582.40, 20,385.60 and 8,028.80

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Solution

The fourth proportional to 13,582.40, 20,385.60 and 8,028.80 is: 12,050.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,582.40 : 20,385.60 = 8,028.80 : x
  2. Step 2: Convert to fraction form
    13,582.40/20,385.60 = 8,028.80/x
  3. Step 3: Cross multiply
    13,582.40x = 20,385.60 × 8,028.80
  4. Step 4: Simplify right side
    13,582.40x = 163,671,905.28
  5. Step 5: Solve for x
    x = 163,671,905.28/13,582.40
  6. Step 6: Final answer
    x = 12,050.29

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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.