Home / 28,861.56-39,816.90-19,433.16

Finding the Fourth Proportional to 28,861.56, 39,816.90 and 19,433.16

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Solution

The fourth proportional to 28,861.56, 39,816.90 and 19,433.16 is: 26,809.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.56 : 39,816.90 = 19,433.16 : x
  2. Step 2: Convert to fraction form
    28,861.56/39,816.90 = 19,433.16/x
  3. Step 3: Cross multiply
    28,861.56x = 39,816.90 × 19,433.16
  4. Step 4: Simplify right side
    28,861.56x = 773,768,188.40
  5. Step 5: Solve for x
    x = 773,768,188.40/28,861.56
  6. Step 6: Final answer
    x = 26,809.65

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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.