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Finding the Fourth Proportional to 11,329.74, 16,972.74 and 5,490.45

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Solution

The fourth proportional to 11,329.74, 16,972.74 and 5,490.45 is: 8,225.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,329.74 : 16,972.74 = 5,490.45 : x
  2. Step 2: Convert to fraction form
    11,329.74/16,972.74 = 5,490.45/x
  3. Step 3: Cross multiply
    11,329.74x = 16,972.74 × 5,490.45
  4. Step 4: Simplify right side
    11,329.74x = 93,187,980.33
  5. Step 5: Solve for x
    x = 93,187,980.33/11,329.74
  6. Step 6: Final answer
    x = 8,225.08

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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.