Home / 18,891.90-28,305.45-12,314.70

Finding the Fourth Proportional to 18,891.90, 28,305.45 and 12,314.70

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Solution

The fourth proportional to 18,891.90, 28,305.45 and 12,314.70 is: 18,450.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.90 : 28,305.45 = 12,314.70 : x
  2. Step 2: Convert to fraction form
    18,891.90/28,305.45 = 12,314.70/x
  3. Step 3: Cross multiply
    18,891.90x = 28,305.45 × 12,314.70
  4. Step 4: Simplify right side
    18,891.90x = 348,573,125.12
  5. Step 5: Solve for x
    x = 348,573,125.12/18,891.90
  6. Step 6: Final answer
    x = 18,450.93

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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.