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Finding the Fourth Proportional to 18,981, 28,488.87 and 9,627.48

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Solution

The fourth proportional to 18,981, 28,488.87 and 9,627.48 is: 14,450.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981 : 28,488.87 = 9,627.48 : x
  2. Step 2: Convert to fraction form
    18,981/28,488.87 = 9,627.48/x
  3. Step 3: Cross multiply
    18,981x = 28,488.87 × 9,627.48
  4. Step 4: Simplify right side
    18,981x = 274,276,026.15
  5. Step 5: Solve for x
    x = 274,276,026.15/18,981
  6. Step 6: Final answer
    x = 14,450.03

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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.