Home / 21,155.79-29,197.04-11,726.67

Finding the Fourth Proportional to 21,155.79, 29,197.04 and 11,726.67

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Solution

The fourth proportional to 21,155.79, 29,197.04 and 11,726.67 is: 16,183.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.79 : 29,197.04 = 11,726.67 : x
  2. Step 2: Convert to fraction form
    21,155.79/29,197.04 = 11,726.67/x
  3. Step 3: Cross multiply
    21,155.79x = 29,197.04 × 11,726.67
  4. Step 4: Simplify right side
    21,155.79x = 342,383,994.42
  5. Step 5: Solve for x
    x = 342,383,994.42/21,155.79
  6. Step 6: Final answer
    x = 16,183.94

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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.