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Finding the Fourth Proportional to 11,289.16, 16,936.98 and 7,388.74

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Solution

The fourth proportional to 11,289.16, 16,936.98 and 7,388.74 is: 11,085.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,289.16 : 16,936.98 = 7,388.74 : x
  2. Step 2: Convert to fraction form
    11,289.16/16,936.98 = 7,388.74/x
  3. Step 3: Cross multiply
    11,289.16x = 16,936.98 × 7,388.74
  4. Step 4: Simplify right side
    11,289.16x = 125,142,941.61
  5. Step 5: Solve for x
    x = 125,142,941.61/11,289.16
  6. Step 6: Final answer
    x = 11,085.23

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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.