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Finding the Fourth Proportional to 18,120.04, 27,142.94 and 10,702.04

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Solution

The fourth proportional to 18,120.04, 27,142.94 and 10,702.04 is: 16,031.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120.04 : 27,142.94 = 10,702.04 : x
  2. Step 2: Convert to fraction form
    18,120.04/27,142.94 = 10,702.04/x
  3. Step 3: Cross multiply
    18,120.04x = 27,142.94 × 10,702.04
  4. Step 4: Simplify right side
    18,120.04x = 290,484,829.60
  5. Step 5: Solve for x
    x = 290,484,829.60/18,120.04
  6. Step 6: Final answer
    x = 16,031.14

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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.