Home / 39,033.99-53,866.91-21,129.14

Finding the Fourth Proportional to 39,033.99, 53,866.91 and 21,129.14

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Solution

The fourth proportional to 39,033.99, 53,866.91 and 21,129.14 is: 29,158.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,033.99 : 53,866.91 = 21,129.14 : x
  2. Step 2: Convert to fraction form
    39,033.99/53,866.91 = 21,129.14/x
  3. Step 3: Cross multiply
    39,033.99x = 53,866.91 × 21,129.14
  4. Step 4: Simplify right side
    39,033.99x = 1,138,161,670.25
  5. Step 5: Solve for x
    x = 1,138,161,670.25/39,033.99
  6. Step 6: Final answer
    x = 29,158.22

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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.