Home / 30,861.12-42,588.38-16,713.98

Finding the Fourth Proportional to 30,861.12, 42,588.38 and 16,713.98

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Solution

The fourth proportional to 30,861.12, 42,588.38 and 16,713.98 is: 23,065.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,861.12 : 42,588.38 = 16,713.98 : x
  2. Step 2: Convert to fraction form
    30,861.12/42,588.38 = 16,713.98/x
  3. Step 3: Cross multiply
    30,861.12x = 42,588.38 × 16,713.98
  4. Step 4: Simplify right side
    30,861.12x = 711,821,331.55
  5. Step 5: Solve for x
    x = 711,821,331.55/30,861.12
  6. Step 6: Final answer
    x = 23,065.31

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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.