Home / 20,916.11-28,864.74-11,356.37

Finding the Fourth Proportional to 20,916.11, 28,864.74 and 11,356.37

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Solution

The fourth proportional to 20,916.11, 28,864.74 and 11,356.37 is: 15,672.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.11 : 28,864.74 = 11,356.37 : x
  2. Step 2: Convert to fraction form
    20,916.11/28,864.74 = 11,356.37/x
  3. Step 3: Cross multiply
    20,916.11x = 28,864.74 × 11,356.37
  4. Step 4: Simplify right side
    20,916.11x = 327,798,667.39
  5. Step 5: Solve for x
    x = 327,798,667.39/20,916.11
  6. Step 6: Final answer
    x = 15,672.07

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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.