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Finding the Fourth Proportional to 18,833.56, 28,274.94 and 15,930.32

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Solution

The fourth proportional to 18,833.56, 28,274.94 and 15,930.32 is: 23,916.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,833.56 : 28,274.94 = 15,930.32 : x
  2. Step 2: Convert to fraction form
    18,833.56/28,274.94 = 15,930.32/x
  3. Step 3: Cross multiply
    18,833.56x = 28,274.94 × 15,930.32
  4. Step 4: Simplify right side
    18,833.56x = 450,428,700.81
  5. Step 5: Solve for x
    x = 450,428,700.81/18,833.56
  6. Step 6: Final answer
    x = 23,916.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.