Home / 20,503.40-28,295.26-11,551.21

Finding the Fourth Proportional to 20,503.40, 28,295.26 and 11,551.21

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Solution

The fourth proportional to 20,503.40, 28,295.26 and 11,551.21 is: 15,940.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.40 : 28,295.26 = 11,551.21 : x
  2. Step 2: Convert to fraction form
    20,503.40/28,295.26 = 11,551.21/x
  3. Step 3: Cross multiply
    20,503.40x = 28,295.26 × 11,551.21
  4. Step 4: Simplify right side
    20,503.40x = 326,844,390.65
  5. Step 5: Solve for x
    x = 326,844,390.65/20,503.40
  6. Step 6: Final answer
    x = 15,940.99

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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.