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Finding the Fourth Proportional to 27,591, 38,072.94 and 15,488.72

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Solution

The fourth proportional to 27,591, 38,072.94 and 15,488.72 is: 21,372.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,591 : 38,072.94 = 15,488.72 : x
  2. Step 2: Convert to fraction form
    27,591/38,072.94 = 15,488.72/x
  3. Step 3: Cross multiply
    27,591x = 38,072.94 × 15,488.72
  4. Step 4: Simplify right side
    27,591x = 589,700,916.87
  5. Step 5: Solve for x
    x = 589,700,916.87/27,591
  6. Step 6: Final answer
    x = 21,372.94

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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.