Home / 13,815.45-20,727.27-6,424.30

Finding the Fourth Proportional to 13,815.45, 20,727.27 and 6,424.30

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Solution

The fourth proportional to 13,815.45, 20,727.27 and 6,424.30 is: 9,638.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.45 : 20,727.27 = 6,424.30 : x
  2. Step 2: Convert to fraction form
    13,815.45/20,727.27 = 6,424.30/x
  3. Step 3: Cross multiply
    13,815.45x = 20,727.27 × 6,424.30
  4. Step 4: Simplify right side
    13,815.45x = 133,158,200.66
  5. Step 5: Solve for x
    x = 133,158,200.66/13,815.45
  6. Step 6: Final answer
    x = 9,638.35

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1.5x scale

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.