Home / 15,227.78-21,016.27-8,513.81

Finding the Fourth Proportional to 15,227.78, 21,016.27 and 8,513.81

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Solution

The fourth proportional to 15,227.78, 21,016.27 and 8,513.81 is: 11,750.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,227.78 : 21,016.27 = 8,513.81 : x
  2. Step 2: Convert to fraction form
    15,227.78/21,016.27 = 8,513.81/x
  3. Step 3: Cross multiply
    15,227.78x = 21,016.27 × 8,513.81
  4. Step 4: Simplify right side
    15,227.78x = 178,928,526.03
  5. Step 5: Solve for x
    x = 178,928,526.03/15,227.78
  6. Step 6: Final answer
    x = 11,750.13

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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.