Home / 28,861.06-39,817.02-19,435.90

Finding the Fourth Proportional to 28,861.06, 39,817.02 and 19,435.90

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Solution

The fourth proportional to 28,861.06, 39,817.02 and 19,435.90 is: 26,813.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.06 : 39,817.02 = 19,435.90 : x
  2. Step 2: Convert to fraction form
    28,861.06/39,817.02 = 19,435.90/x
  3. Step 3: Cross multiply
    28,861.06x = 39,817.02 × 19,435.90
  4. Step 4: Simplify right side
    28,861.06x = 773,879,619.02
  5. Step 5: Solve for x
    x = 773,879,619.02/28,861.06
  6. Step 6: Final answer
    x = 26,813.97

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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.