Home / 20,210.53-27,890.57-11,259.80

Finding the Fourth Proportional to 20,210.53, 27,890.57 and 11,259.80

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Solution

The fourth proportional to 20,210.53, 27,890.57 and 11,259.80 is: 15,538.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.53 : 27,890.57 = 11,259.80 : x
  2. Step 2: Convert to fraction form
    20,210.53/27,890.57 = 11,259.80/x
  3. Step 3: Cross multiply
    20,210.53x = 27,890.57 × 11,259.80
  4. Step 4: Simplify right side
    20,210.53x = 314,042,362.73
  5. Step 5: Solve for x
    x = 314,042,362.73/20,210.53
  6. Step 6: Final answer
    x = 15,538.55

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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.