Home / 20,983.11-28,956.70-11,551.67

Finding the Fourth Proportional to 20,983.11, 28,956.70 and 11,551.67

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Solution

The fourth proportional to 20,983.11, 28,956.70 and 11,551.67 is: 15,941.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.11 : 28,956.70 = 11,551.67 : x
  2. Step 2: Convert to fraction form
    20,983.11/28,956.70 = 11,551.67/x
  3. Step 3: Cross multiply
    20,983.11x = 28,956.70 × 11,551.67
  4. Step 4: Simplify right side
    20,983.11x = 334,498,242.69
  5. Step 5: Solve for x
    x = 334,498,242.69/20,983.11
  6. Step 6: Final answer
    x = 15,941.31

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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.