Home / 13,008-19,515.60-4,242.72

Finding the Fourth Proportional to 13,008, 19,515.60 and 4,242.72

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Solution

The fourth proportional to 13,008, 19,515.60 and 4,242.72 is: 6,365.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,008 : 19,515.60 = 4,242.72 : x
  2. Step 2: Convert to fraction form
    13,008/19,515.60 = 4,242.72/x
  3. Step 3: Cross multiply
    13,008x = 19,515.60 × 4,242.72
  4. Step 4: Simplify right side
    13,008x = 82,799,226.43
  5. Step 5: Solve for x
    x = 82,799,226.43/13,008
  6. Step 6: Final answer
    x = 6,365.25

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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.