Home / 13,187.60-19,784.10-4,428.80

Finding the Fourth Proportional to 13,187.60, 19,784.10 and 4,428.80

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Solution

The fourth proportional to 13,187.60, 19,784.10 and 4,428.80 is: 6,644.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.60 : 19,784.10 = 4,428.80 : x
  2. Step 2: Convert to fraction form
    13,187.60/19,784.10 = 4,428.80/x
  3. Step 3: Cross multiply
    13,187.60x = 19,784.10 × 4,428.80
  4. Step 4: Simplify right side
    13,187.60x = 87,619,822.08
  5. Step 5: Solve for x
    x = 87,619,822.08/13,187.60
  6. Step 6: Final answer
    x = 6,644.11

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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.