Home / 12,092.20-16,687.70-7,615.40

Finding the Fourth Proportional to 12,092.20, 16,687.70 and 7,615.40

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Solution

The fourth proportional to 12,092.20, 16,687.70 and 7,615.40 is: 10,509.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,092.20 : 16,687.70 = 7,615.40 : x
  2. Step 2: Convert to fraction form
    12,092.20/16,687.70 = 7,615.40/x
  3. Step 3: Cross multiply
    12,092.20x = 16,687.70 × 7,615.40
  4. Step 4: Simplify right side
    12,092.20x = 127,083,510.58
  5. Step 5: Solve for x
    x = 127,083,510.58/12,092.20
  6. Step 6: Final answer
    x = 10,509.54

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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.