Home / 21,660.48-29,888.55-12,099.24

Finding the Fourth Proportional to 21,660.48, 29,888.55 and 12,099.24

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Solution

The fourth proportional to 21,660.48, 29,888.55 and 12,099.24 is: 16,695.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,660.48 : 29,888.55 = 12,099.24 : x
  2. Step 2: Convert to fraction form
    21,660.48/29,888.55 = 12,099.24/x
  3. Step 3: Cross multiply
    21,660.48x = 29,888.55 × 12,099.24
  4. Step 4: Simplify right side
    21,660.48x = 361,628,739.70
  5. Step 5: Solve for x
    x = 361,628,739.70/21,660.48
  6. Step 6: Final answer
    x = 16,695.32

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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.