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Finding the Fourth Proportional to 9,289.80, 13,950.90 and 8,998.20

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Solution

The fourth proportional to 9,289.80, 13,950.90 and 8,998.20 is: 13,512.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,289.80 : 13,950.90 = 8,998.20 : x
  2. Step 2: Convert to fraction form
    9,289.80/13,950.90 = 8,998.20/x
  3. Step 3: Cross multiply
    9,289.80x = 13,950.90 × 8,998.20
  4. Step 4: Simplify right side
    9,289.80x = 125,532,988.38
  5. Step 5: Solve for x
    x = 125,532,988.38/9,289.80
  6. Step 6: Final answer
    x = 13,512.99

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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.