Home / 12,479.79-18,722.48-4,688.67

Finding the Fourth Proportional to 12,479.79, 18,722.48 and 4,688.67

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Solution

The fourth proportional to 12,479.79, 18,722.48 and 4,688.67 is: 7,034.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479.79 : 18,722.48 = 4,688.67 : x
  2. Step 2: Convert to fraction form
    12,479.79/18,722.48 = 4,688.67/x
  3. Step 3: Cross multiply
    12,479.79x = 18,722.48 × 4,688.67
  4. Step 4: Simplify right side
    12,479.79x = 87,783,530.30
  5. Step 5: Solve for x
    x = 87,783,530.30/12,479.79
  6. Step 6: Final answer
    x = 7,034.06

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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.