Home / 15,483.38-21,366.42-8,409.62

Finding the Fourth Proportional to 15,483.38, 21,366.42 and 8,409.62

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Solution

The fourth proportional to 15,483.38, 21,366.42 and 8,409.62 is: 11,604.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,483.38 : 21,366.42 = 8,409.62 : x
  2. Step 2: Convert to fraction form
    15,483.38/21,366.42 = 8,409.62/x
  3. Step 3: Cross multiply
    15,483.38x = 21,366.42 × 8,409.62
  4. Step 4: Simplify right side
    15,483.38x = 179,683,472.96
  5. Step 5: Solve for x
    x = 179,683,472.96/15,483.38
  6. Step 6: Final answer
    x = 11,604.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.