Home / 13,619.60-20,429.40-4,864.40

Finding the Fourth Proportional to 13,619.60, 20,429.40 and 4,864.40

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Solution

The fourth proportional to 13,619.60, 20,429.40 and 4,864.40 is: 7,296.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.60 : 20,429.40 = 4,864.40 : x
  2. Step 2: Convert to fraction form
    13,619.60/20,429.40 = 4,864.40/x
  3. Step 3: Cross multiply
    13,619.60x = 20,429.40 × 4,864.40
  4. Step 4: Simplify right side
    13,619.60x = 99,376,773.36
  5. Step 5: Solve for x
    x = 99,376,773.36/13,619.60
  6. Step 6: Final answer
    x = 7,296.60

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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.