Home / 18,921.28-26,112.56-10,537.76

Finding the Fourth Proportional to 18,921.28, 26,112.56 and 10,537.76

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Solution

The fourth proportional to 18,921.28, 26,112.56 and 10,537.76 is: 14,542.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.28 : 26,112.56 = 10,537.76 : x
  2. Step 2: Convert to fraction form
    18,921.28/26,112.56 = 10,537.76/x
  3. Step 3: Cross multiply
    18,921.28x = 26,112.56 × 10,537.76
  4. Step 4: Simplify right side
    18,921.28x = 275,167,890.27
  5. Step 5: Solve for x
    x = 275,167,890.27/18,921.28
  6. Step 6: Final answer
    x = 14,542.77

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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.