Home / 20,552.67-28,362.76-11,121.23

Finding the Fourth Proportional to 20,552.67, 28,362.76 and 11,121.23

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Solution

The fourth proportional to 20,552.67, 28,362.76 and 11,121.23 is: 15,347.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.67 : 28,362.76 = 11,121.23 : x
  2. Step 2: Convert to fraction form
    20,552.67/28,362.76 = 11,121.23/x
  3. Step 3: Cross multiply
    20,552.67x = 28,362.76 × 11,121.23
  4. Step 4: Simplify right side
    20,552.67x = 315,428,820.50
  5. Step 5: Solve for x
    x = 315,428,820.50/20,552.67
  6. Step 6: Final answer
    x = 15,347.34

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Half scale
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Double scale
Find fourth proportional to 20,553.67, 28,364.14 and 11,122.23
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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.