Home / 10,138.20-13,983.68-9,301.67

Finding the Fourth Proportional to 10,138.20, 13,983.68 and 9,301.67

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Solution

The fourth proportional to 10,138.20, 13,983.68 and 9,301.67 is: 12,829.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,138.20 : 13,983.68 = 9,301.67 : x
  2. Step 2: Convert to fraction form
    10,138.20/13,983.68 = 9,301.67/x
  3. Step 3: Cross multiply
    10,138.20x = 13,983.68 × 9,301.67
  4. Step 4: Simplify right side
    10,138.20x = 130,071,576.75
  5. Step 5: Solve for x
    x = 130,071,576.75/10,138.20
  6. Step 6: Final answer
    x = 12,829.85

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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.