Home / 39,718.77-54,812.85-21,814.16

Finding the Fourth Proportional to 39,718.77, 54,812.85 and 21,814.16

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Solution

The fourth proportional to 39,718.77, 54,812.85 and 21,814.16 is: 30,104.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,718.77 : 54,812.85 = 21,814.16 : x
  2. Step 2: Convert to fraction form
    39,718.77/54,812.85 = 21,814.16/x
  3. Step 3: Cross multiply
    39,718.77x = 54,812.85 × 21,814.16
  4. Step 4: Simplify right side
    39,718.77x = 1,195,695,924.09
  5. Step 5: Solve for x
    x = 1,195,695,924.09/39,718.77
  6. Step 6: Final answer
    x = 30,104.06

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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.