Home / 20,080.04-27,712.04-11,128.40

Finding the Fourth Proportional to 20,080.04, 27,712.04 and 11,128.40

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Solution

The fourth proportional to 20,080.04, 27,712.04 and 11,128.40 is: 15,358.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.04 : 27,712.04 = 11,128.40 : x
  2. Step 2: Convert to fraction form
    20,080.04/27,712.04 = 11,128.40/x
  3. Step 3: Cross multiply
    20,080.04x = 27,712.04 × 11,128.40
  4. Step 4: Simplify right side
    20,080.04x = 308,390,665.94
  5. Step 5: Solve for x
    x = 308,390,665.94/20,080.04
  6. Step 6: Final answer
    x = 15,358.07

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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.