Home / 12,012.12-18,018.42-6,470.04

Finding the Fourth Proportional to 12,012.12, 18,018.42 and 6,470.04

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Solution

The fourth proportional to 12,012.12, 18,018.42 and 6,470.04 is: 9,705.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,012.12 : 18,018.42 = 6,470.04 : x
  2. Step 2: Convert to fraction form
    12,012.12/18,018.42 = 6,470.04/x
  3. Step 3: Cross multiply
    12,012.12x = 18,018.42 × 6,470.04
  4. Step 4: Simplify right side
    12,012.12x = 116,579,898.14
  5. Step 5: Solve for x
    x = 116,579,898.14/12,012.12
  6. Step 6: Final answer
    x = 9,705.19

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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.