Home / 18,735.40-28,116.95-8,874.70

Finding the Fourth Proportional to 18,735.40, 28,116.95 and 8,874.70

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Solution

The fourth proportional to 18,735.40, 28,116.95 and 8,874.70 is: 13,318.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.40 : 28,116.95 = 8,874.70 : x
  2. Step 2: Convert to fraction form
    18,735.40/28,116.95 = 8,874.70/x
  3. Step 3: Cross multiply
    18,735.40x = 28,116.95 × 8,874.70
  4. Step 4: Simplify right side
    18,735.40x = 249,529,355.58
  5. Step 5: Solve for x
    x = 249,529,355.58/18,735.40
  6. Step 6: Final answer
    x = 13,318.61

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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.