Home / 10,129.28-15,195.92-4,285.88

Finding the Fourth Proportional to 10,129.28, 15,195.92 and 4,285.88

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Solution

The fourth proportional to 10,129.28, 15,195.92 and 4,285.88 is: 6,429.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.28 : 15,195.92 = 4,285.88 : x
  2. Step 2: Convert to fraction form
    10,129.28/15,195.92 = 4,285.88/x
  3. Step 3: Cross multiply
    10,129.28x = 15,195.92 × 4,285.88
  4. Step 4: Simplify right side
    10,129.28x = 65,127,889.61
  5. Step 5: Solve for x
    x = 65,127,889.61/10,129.28
  6. Step 6: Final answer
    x = 6,429.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.