Home / 13,472.72-20,159.87-7,928.67

Finding the Fourth Proportional to 13,472.72, 20,159.87 and 7,928.67

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Solution

The fourth proportional to 13,472.72, 20,159.87 and 7,928.67 is: 11,864.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,472.72 : 20,159.87 = 7,928.67 : x
  2. Step 2: Convert to fraction form
    13,472.72/20,159.87 = 7,928.67/x
  3. Step 3: Cross multiply
    13,472.72x = 20,159.87 × 7,928.67
  4. Step 4: Simplify right side
    13,472.72x = 159,840,956.47
  5. Step 5: Solve for x
    x = 159,840,956.47/13,472.72
  6. Step 6: Final answer
    x = 11,864.05

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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.