Home / 20,100.64-27,739.11-11,148.40

Finding the Fourth Proportional to 20,100.64, 27,739.11 and 11,148.40

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Solution

The fourth proportional to 20,100.64, 27,739.11 and 11,148.40 is: 15,384.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.64 : 27,739.11 = 11,148.40 : x
  2. Step 2: Convert to fraction form
    20,100.64/27,739.11 = 11,148.40/x
  3. Step 3: Cross multiply
    20,100.64x = 27,739.11 × 11,148.40
  4. Step 4: Simplify right side
    20,100.64x = 309,246,693.92
  5. Step 5: Solve for x
    x = 309,246,693.92/20,100.64
  6. Step 6: Final answer
    x = 15,384.92

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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.