Home / 20,114.40-27,755.58-11,159.64

Finding the Fourth Proportional to 20,114.40, 27,755.58 and 11,159.64

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Solution

The fourth proportional to 20,114.40, 27,755.58 and 11,159.64 is: 15,399.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,114.40 : 27,755.58 = 11,159.64 : x
  2. Step 2: Convert to fraction form
    20,114.40/27,755.58 = 11,159.64/x
  3. Step 3: Cross multiply
    20,114.40x = 27,755.58 × 11,159.64
  4. Step 4: Simplify right side
    20,114.40x = 309,742,280.79
  5. Step 5: Solve for x
    x = 309,742,280.79/20,114.40
  6. Step 6: Final answer
    x = 15,399.03

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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.