Home / 13,187.61-19,776.51-4,420.44

Finding the Fourth Proportional to 13,187.61, 19,776.51 and 4,420.44

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Solution

The fourth proportional to 13,187.61, 19,776.51 and 4,420.44 is: 6,629.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.61 : 19,776.51 = 4,420.44 : x
  2. Step 2: Convert to fraction form
    13,187.61/19,776.51 = 4,420.44/x
  3. Step 3: Cross multiply
    13,187.61x = 19,776.51 × 4,420.44
  4. Step 4: Simplify right side
    13,187.61x = 87,420,875.86
  5. Step 5: Solve for x
    x = 87,420,875.86/13,187.61
  6. Step 6: Final answer
    x = 6,629.02

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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.