Home / 18,969.35-28,463.61-9,116.92

Finding the Fourth Proportional to 18,969.35, 28,463.61 and 9,116.92

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Solution

The fourth proportional to 18,969.35, 28,463.61 and 9,116.92 is: 13,679.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,969.35 : 28,463.61 = 9,116.92 : x
  2. Step 2: Convert to fraction form
    18,969.35/28,463.61 = 9,116.92/x
  3. Step 3: Cross multiply
    18,969.35x = 28,463.61 × 9,116.92
  4. Step 4: Simplify right side
    18,969.35x = 259,500,312.96
  5. Step 5: Solve for x
    x = 259,500,312.96/18,969.35
  6. Step 6: Final answer
    x = 13,679.98

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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.