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Finding the Fourth Proportional to 18,159.55, 27,240.90 and 5,011.92

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Solution

The fourth proportional to 18,159.55, 27,240.90 and 5,011.92 is: 7,518.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,159.55 : 27,240.90 = 5,011.92 : x
  2. Step 2: Convert to fraction form
    18,159.55/27,240.90 = 5,011.92/x
  3. Step 3: Cross multiply
    18,159.55x = 27,240.90 × 5,011.92
  4. Step 4: Simplify right side
    18,159.55x = 136,529,211.53
  5. Step 5: Solve for x
    x = 136,529,211.53/18,159.55
  6. Step 6: Final answer
    x = 7,518.31

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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.