Home / 10,125.28-15,188.48-3,970.72

Finding the Fourth Proportional to 10,125.28, 15,188.48 and 3,970.72

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Solution

The fourth proportional to 10,125.28, 15,188.48 and 3,970.72 is: 5,956.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,125.28 : 15,188.48 = 3,970.72 : x
  2. Step 2: Convert to fraction form
    10,125.28/15,188.48 = 3,970.72/x
  3. Step 3: Cross multiply
    10,125.28x = 15,188.48 × 3,970.72
  4. Step 4: Simplify right side
    10,125.28x = 60,309,201.31
  5. Step 5: Solve for x
    x = 60,309,201.31/10,125.28
  6. Step 6: Final answer
    x = 5,956.30

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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.