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Finding the Fourth Proportional to 18,289.88, 27,373.38 and 10,487

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Solution

The fourth proportional to 18,289.88, 27,373.38 and 10,487 is: 15,695.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,289.88 : 27,373.38 = 10,487 : x
  2. Step 2: Convert to fraction form
    18,289.88/27,373.38 = 10,487/x
  3. Step 3: Cross multiply
    18,289.88x = 27,373.38 × 10,487
  4. Step 4: Simplify right side
    18,289.88x = 287,064,636.06
  5. Step 5: Solve for x
    x = 287,064,636.06/18,289.88
  6. Step 6: Final answer
    x = 15,695.27

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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.