Home / 21,660.12-32,490.46-7,620.58

Finding the Fourth Proportional to 21,660.12, 32,490.46 and 7,620.58

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Solution

The fourth proportional to 21,660.12, 32,490.46 and 7,620.58 is: 11,430.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,660.12 : 32,490.46 = 7,620.58 : x
  2. Step 2: Convert to fraction form
    21,660.12/32,490.46 = 7,620.58/x
  3. Step 3: Cross multiply
    21,660.12x = 32,490.46 × 7,620.58
  4. Step 4: Simplify right side
    21,660.12x = 247,596,149.67
  5. Step 5: Solve for x
    x = 247,596,149.67/21,660.12
  6. Step 6: Final answer
    x = 11,430.97

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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.