Home / 20,101.46-27,739.80-11,148.89

Finding the Fourth Proportional to 20,101.46, 27,739.80 and 11,148.89

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Solution

The fourth proportional to 20,101.46, 27,739.80 and 11,148.89 is: 15,385.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.46 : 27,739.80 = 11,148.89 : x
  2. Step 2: Convert to fraction form
    20,101.46/27,739.80 = 11,148.89/x
  3. Step 3: Cross multiply
    20,101.46x = 27,739.80 × 11,148.89
  4. Step 4: Simplify right side
    20,101.46x = 309,267,840.12
  5. Step 5: Solve for x
    x = 309,267,840.12/20,101.46
  6. Step 6: Final answer
    x = 15,385.35

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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.