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Finding the Fourth Proportional to 9,315.84, 13,992.96 and 9,004.80

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Solution

The fourth proportional to 9,315.84, 13,992.96 and 9,004.80 is: 13,525.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315.84 : 13,992.96 = 9,004.80 : x
  2. Step 2: Convert to fraction form
    9,315.84/13,992.96 = 9,004.80/x
  3. Step 3: Cross multiply
    9,315.84x = 13,992.96 × 9,004.80
  4. Step 4: Simplify right side
    9,315.84x = 126,003,806.21
  5. Step 5: Solve for x
    x = 126,003,806.21/9,315.84
  6. Step 6: Final answer
    x = 13,525.76

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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.