Home / 13,616.40-20,419.80-4,851.60

Finding the Fourth Proportional to 13,616.40, 20,419.80 and 4,851.60

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Solution

The fourth proportional to 13,616.40, 20,419.80 and 4,851.60 is: 7,275.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,616.40 : 20,419.80 = 4,851.60 : x
  2. Step 2: Convert to fraction form
    13,616.40/20,419.80 = 4,851.60/x
  3. Step 3: Cross multiply
    13,616.40x = 20,419.80 × 4,851.60
  4. Step 4: Simplify right side
    13,616.40x = 99,068,701.68
  5. Step 5: Solve for x
    x = 99,068,701.68/13,616.40
  6. Step 6: Final answer
    x = 7,275.69

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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.