Home / 39,017.21-53,843.36-21,111.81

Finding the Fourth Proportional to 39,017.21, 53,843.36 and 21,111.81

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Solution

The fourth proportional to 39,017.21, 53,843.36 and 21,111.81 is: 29,134.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,017.21 : 53,843.36 = 21,111.81 : x
  2. Step 2: Convert to fraction form
    39,017.21/53,843.36 = 21,111.81/x
  3. Step 3: Cross multiply
    39,017.21x = 53,843.36 × 21,111.81
  4. Step 4: Simplify right side
    39,017.21x = 1,136,730,680.52
  5. Step 5: Solve for x
    x = 1,136,730,680.52/39,017.21
  6. Step 6: Final answer
    x = 29,134.09

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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.