Home / 30,635.34-42,285.51-18,535.79

Finding the Fourth Proportional to 30,635.34, 42,285.51 and 18,535.79

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Solution

The fourth proportional to 30,635.34, 42,285.51 and 18,535.79 is: 25,584.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,635.34 : 42,285.51 = 18,535.79 : x
  2. Step 2: Convert to fraction form
    30,635.34/42,285.51 = 18,535.79/x
  3. Step 3: Cross multiply
    30,635.34x = 42,285.51 × 18,535.79
  4. Step 4: Simplify right side
    30,635.34x = 783,795,121.98
  5. Step 5: Solve for x
    x = 783,795,121.98/30,635.34
  6. Step 6: Final answer
    x = 25,584.67

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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.