Home / 13,888.72-20,824.88-5,572.64

Finding the Fourth Proportional to 13,888.72, 20,824.88 and 5,572.64

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Solution

The fourth proportional to 13,888.72, 20,824.88 and 5,572.64 is: 8,355.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.72 : 20,824.88 = 5,572.64 : x
  2. Step 2: Convert to fraction form
    13,888.72/20,824.88 = 5,572.64/x
  3. Step 3: Cross multiply
    13,888.72x = 20,824.88 × 5,572.64
  4. Step 4: Simplify right side
    13,888.72x = 116,049,559.28
  5. Step 5: Solve for x
    x = 116,049,559.28/13,888.72
  6. Step 6: Final answer
    x = 8,355.67

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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.