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Finding the Fourth Proportional to 18,592.79, 27,893.75 and 8,720.57

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Solution

The fourth proportional to 18,592.79, 27,893.75 and 8,720.57 is: 13,082.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,592.79 : 27,893.75 = 8,720.57 : x
  2. Step 2: Convert to fraction form
    18,592.79/27,893.75 = 8,720.57/x
  3. Step 3: Cross multiply
    18,592.79x = 27,893.75 × 8,720.57
  4. Step 4: Simplify right side
    18,592.79x = 243,249,216.37
  5. Step 5: Solve for x
    x = 243,249,216.37/18,592.79
  6. Step 6: Final answer
    x = 13,082.99

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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.