Home / 13,778.64-20,668.68-4,545.36

Finding the Fourth Proportional to 13,778.64, 20,668.68 and 4,545.36

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Solution

The fourth proportional to 13,778.64, 20,668.68 and 4,545.36 is: 6,818.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.64 : 20,668.68 = 4,545.36 : x
  2. Step 2: Convert to fraction form
    13,778.64/20,668.68 = 4,545.36/x
  3. Step 3: Cross multiply
    13,778.64x = 20,668.68 × 4,545.36
  4. Step 4: Simplify right side
    13,778.64x = 93,946,591.32
  5. Step 5: Solve for x
    x = 93,946,591.32/13,778.64
  6. Step 6: Final answer
    x = 6,818.28

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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.