Home / 39,861.16-55,010.90-21,956.16

Finding the Fourth Proportional to 39,861.16, 55,010.90 and 21,956.16

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Solution

The fourth proportional to 39,861.16, 55,010.90 and 21,956.16 is: 30,300.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,861.16 : 55,010.90 = 21,956.16 : x
  2. Step 2: Convert to fraction form
    39,861.16/55,010.90 = 21,956.16/x
  3. Step 3: Cross multiply
    39,861.16x = 55,010.90 × 21,956.16
  4. Step 4: Simplify right side
    39,861.16x = 1,207,828,122.14
  5. Step 5: Solve for x
    x = 1,207,828,122.14/39,861.16
  6. Step 6: Final answer
    x = 30,300.88

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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.