Home / 21,154.50-29,193.21-11,723.67

Finding the Fourth Proportional to 21,154.50, 29,193.21 and 11,723.67

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Solution

The fourth proportional to 21,154.50, 29,193.21 and 11,723.67 is: 16,178.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.50 : 29,193.21 = 11,723.67 : x
  2. Step 2: Convert to fraction form
    21,154.50/29,193.21 = 11,723.67/x
  3. Step 3: Cross multiply
    21,154.50x = 29,193.21 × 11,723.67
  4. Step 4: Simplify right side
    21,154.50x = 342,251,560.28
  5. Step 5: Solve for x
    x = 342,251,560.28/21,154.50
  6. Step 6: Final answer
    x = 16,178.66

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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.