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Finding the Fourth Proportional to 10,998.95, 16,502.09 and 7,315.70

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Solution

The fourth proportional to 10,998.95, 16,502.09 and 7,315.70 is: 10,975.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,998.95 : 16,502.09 = 7,315.70 : x
  2. Step 2: Convert to fraction form
    10,998.95/16,502.09 = 7,315.70/x
  3. Step 3: Cross multiply
    10,998.95x = 16,502.09 × 7,315.70
  4. Step 4: Simplify right side
    10,998.95x = 120,724,220.72
  5. Step 5: Solve for x
    x = 120,724,220.72/10,998.95
  6. Step 6: Final answer
    x = 10,975.98

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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.