Home / 20,277.71-27,982.95-11,325.34

Finding the Fourth Proportional to 20,277.71, 27,982.95 and 11,325.34

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Solution

The fourth proportional to 20,277.71, 27,982.95 and 11,325.34 is: 15,628.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,277.71 : 27,982.95 = 11,325.34 : x
  2. Step 2: Convert to fraction form
    20,277.71/27,982.95 = 11,325.34/x
  3. Step 3: Cross multiply
    20,277.71x = 27,982.95 × 11,325.34
  4. Step 4: Simplify right side
    20,277.71x = 316,916,415.46
  5. Step 5: Solve for x
    x = 316,916,415.46/20,277.71
  6. Step 6: Final answer
    x = 15,628.81

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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.