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Finding the Fourth Proportional to 18,483.51, 27,715.13 and 9,102.90

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Solution

The fourth proportional to 18,483.51, 27,715.13 and 9,102.90 is: 13,649.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,483.51 : 27,715.13 = 9,102.90 : x
  2. Step 2: Convert to fraction form
    18,483.51/27,715.13 = 9,102.90/x
  3. Step 3: Cross multiply
    18,483.51x = 27,715.13 × 9,102.90
  4. Step 4: Simplify right side
    18,483.51x = 252,287,975.70
  5. Step 5: Solve for x
    x = 252,287,975.70/18,483.51
  6. Step 6: Final answer
    x = 13,649.36

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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.