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Finding the Fourth Proportional to 12,060.16, 16,640.12 and 7,021.32

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Solution

The fourth proportional to 12,060.16, 16,640.12 and 7,021.32 is: 9,687.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,060.16 : 16,640.12 = 7,021.32 : x
  2. Step 2: Convert to fraction form
    12,060.16/16,640.12 = 7,021.32/x
  3. Step 3: Cross multiply
    12,060.16x = 16,640.12 × 7,021.32
  4. Step 4: Simplify right side
    12,060.16x = 116,835,607.36
  5. Step 5: Solve for x
    x = 116,835,607.36/12,060.16
  6. Step 6: Final answer
    x = 9,687.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.