Home / 20,124.17-27,771.47-11,171.84

Finding the Fourth Proportional to 20,124.17, 27,771.47 and 11,171.84

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Solution

The fourth proportional to 20,124.17, 27,771.47 and 11,171.84 is: 15,417.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.17 : 27,771.47 = 11,171.84 : x
  2. Step 2: Convert to fraction form
    20,124.17/27,771.47 = 11,171.84/x
  3. Step 3: Cross multiply
    20,124.17x = 27,771.47 × 11,171.84
  4. Step 4: Simplify right side
    20,124.17x = 310,258,224.69
  5. Step 5: Solve for x
    x = 310,258,224.69/20,124.17
  6. Step 6: Final answer
    x = 15,417.20

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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.