Home / 20,623.56-28,458.12-11,549.46

Finding the Fourth Proportional to 20,623.56, 28,458.12 and 11,549.46

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Solution

The fourth proportional to 20,623.56, 28,458.12 and 11,549.46 is: 15,936.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.56 : 28,458.12 = 11,549.46 : x
  2. Step 2: Convert to fraction form
    20,623.56/28,458.12 = 11,549.46/x
  3. Step 3: Cross multiply
    20,623.56x = 28,458.12 × 11,549.46
  4. Step 4: Simplify right side
    20,623.56x = 328,675,918.62
  5. Step 5: Solve for x
    x = 328,675,918.62/20,623.56
  6. Step 6: Final answer
    x = 15,936.91

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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.