Home / 30,870.82-42,601.85-16,723.63

Finding the Fourth Proportional to 30,870.82, 42,601.85 and 16,723.63

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Solution

The fourth proportional to 30,870.82, 42,601.85 and 16,723.63 is: 23,078.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,870.82 : 42,601.85 = 16,723.63 : x
  2. Step 2: Convert to fraction form
    30,870.82/42,601.85 = 16,723.63/x
  3. Step 3: Cross multiply
    30,870.82x = 42,601.85 × 16,723.63
  4. Step 4: Simplify right side
    30,870.82x = 712,457,576.72
  5. Step 5: Solve for x
    x = 712,457,576.72/30,870.82
  6. Step 6: Final answer
    x = 23,078.67

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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.