Home / 30,581.91-42,199.68-17,150.40

Finding the Fourth Proportional to 30,581.91, 42,199.68 and 17,150.40

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Solution

The fourth proportional to 30,581.91, 42,199.68 and 17,150.40 is: 23,665.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,581.91 : 42,199.68 = 17,150.40 : x
  2. Step 2: Convert to fraction form
    30,581.91/42,199.68 = 17,150.40/x
  3. Step 3: Cross multiply
    30,581.91x = 42,199.68 × 17,150.40
  4. Step 4: Simplify right side
    30,581.91x = 723,741,391.87
  5. Step 5: Solve for x
    x = 723,741,391.87/30,581.91
  6. Step 6: Final answer
    x = 23,665.67

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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.