Home / 20,974.37-28,944.84-11,543.15

Finding the Fourth Proportional to 20,974.37, 28,944.84 and 11,543.15

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Solution

The fourth proportional to 20,974.37, 28,944.84 and 11,543.15 is: 15,929.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.37 : 28,944.84 = 11,543.15 : x
  2. Step 2: Convert to fraction form
    20,974.37/28,944.84 = 11,543.15/x
  3. Step 3: Cross multiply
    20,974.37x = 28,944.84 × 11,543.15
  4. Step 4: Simplify right side
    20,974.37x = 334,114,572.13
  5. Step 5: Solve for x
    x = 334,114,572.13/20,974.37
  6. Step 6: Final answer
    x = 15,929.66

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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.