Home / 13,818.40-20,727.80-5,053.22

Finding the Fourth Proportional to 13,818.40, 20,727.80 and 5,053.22

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Solution

The fourth proportional to 13,818.40, 20,727.80 and 5,053.22 is: 7,579.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.40 : 20,727.80 = 5,053.22 : x
  2. Step 2: Convert to fraction form
    13,818.40/20,727.80 = 5,053.22/x
  3. Step 3: Cross multiply
    13,818.40x = 20,727.80 × 5,053.22
  4. Step 4: Simplify right side
    13,818.40x = 104,742,101.29
  5. Step 5: Solve for x
    x = 104,742,101.29/13,818.40
  6. Step 6: Final answer
    x = 7,579.90

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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.