Home / 12,153.80-18,237.90-8,005.70

Finding the Fourth Proportional to 12,153.80, 18,237.90 and 8,005.70

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Solution

The fourth proportional to 12,153.80, 18,237.90 and 8,005.70 is: 12,013.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,153.80 : 18,237.90 = 8,005.70 : x
  2. Step 2: Convert to fraction form
    12,153.80/18,237.90 = 8,005.70/x
  3. Step 3: Cross multiply
    12,153.80x = 18,237.90 × 8,005.70
  4. Step 4: Simplify right side
    12,153.80x = 146,007,156.03
  5. Step 5: Solve for x
    x = 146,007,156.03/12,153.80
  6. Step 6: Final answer
    x = 12,013.29

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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.