Home / 38,639.55-57,959.63-13,679.71

Finding the Fourth Proportional to 38,639.55, 57,959.63 and 13,679.71

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Solution

The fourth proportional to 38,639.55, 57,959.63 and 13,679.71 is: 20,519.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,639.55 : 57,959.63 = 13,679.71 : x
  2. Step 2: Convert to fraction form
    38,639.55/57,959.63 = 13,679.71/x
  3. Step 3: Cross multiply
    38,639.55x = 57,959.63 × 13,679.71
  4. Step 4: Simplify right side
    38,639.55x = 792,870,930.11
  5. Step 5: Solve for x
    x = 792,870,930.11/38,639.55
  6. Step 6: Final answer
    x = 20,519.67

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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.