Home / 21,242.52-29,315.48-11,811.76

Finding the Fourth Proportional to 21,242.52, 29,315.48 and 11,811.76

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Solution

The fourth proportional to 21,242.52, 29,315.48 and 11,811.76 is: 16,300.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.52 : 29,315.48 = 11,811.76 : x
  2. Step 2: Convert to fraction form
    21,242.52/29,315.48 = 11,811.76/x
  3. Step 3: Cross multiply
    21,242.52x = 29,315.48 × 11,811.76
  4. Step 4: Simplify right side
    21,242.52x = 346,267,414.04
  5. Step 5: Solve for x
    x = 346,267,414.04/21,242.52
  6. Step 6: Final answer
    x = 16,300.67

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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.