Home / 25,421.28-35,081.34-15,485.28

Finding the Fourth Proportional to 25,421.28, 35,081.34 and 15,485.28

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Solution

The fourth proportional to 25,421.28, 35,081.34 and 15,485.28 is: 21,369.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,421.28 : 35,081.34 = 15,485.28 : x
  2. Step 2: Convert to fraction form
    25,421.28/35,081.34 = 15,485.28/x
  3. Step 3: Cross multiply
    25,421.28x = 35,081.34 × 15,485.28
  4. Step 4: Simplify right side
    25,421.28x = 543,244,372.68
  5. Step 5: Solve for x
    x = 543,244,372.68/25,421.28
  6. Step 6: Final answer
    x = 21,369.67

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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.