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Finding the Fourth Proportional to 18,503.92, 27,756.16 and 5,356.34

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Solution

The fourth proportional to 18,503.92, 27,756.16 and 5,356.34 is: 8,034.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,503.92 : 27,756.16 = 5,356.34 : x
  2. Step 2: Convert to fraction form
    18,503.92/27,756.16 = 5,356.34/x
  3. Step 3: Cross multiply
    18,503.92x = 27,756.16 × 5,356.34
  4. Step 4: Simplify right side
    18,503.92x = 148,671,277.88
  5. Step 5: Solve for x
    x = 148,671,277.88/18,503.92
  6. Step 6: Final answer
    x = 8,034.58

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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.