Home / 20,242.32-27,931.76-11,289.36

Finding the Fourth Proportional to 20,242.32, 27,931.76 and 11,289.36

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Solution

The fourth proportional to 20,242.32, 27,931.76 and 11,289.36 is: 15,577.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.32 : 27,931.76 = 11,289.36 : x
  2. Step 2: Convert to fraction form
    20,242.32/27,931.76 = 11,289.36/x
  3. Step 3: Cross multiply
    20,242.32x = 27,931.76 × 11,289.36
  4. Step 4: Simplify right side
    20,242.32x = 315,331,694.07
  5. Step 5: Solve for x
    x = 315,331,694.07/20,242.32
  6. Step 6: Final answer
    x = 15,577.84

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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.